CURRICULUM VITAE

Surname: Tzovaras

Name: George

DOB: 10-11-1964

Marital status: Married with Niki Briassouli, since 1991. We have two children,

Irene, born in Athens in 1991, and, Nicholas-Andrew, born in Belfast, N. Ireland, UK

in 1996.

Current position: Professor of Surgery, University of Thessaly, Faculty of Medicine

Head of the Department of Surgery, University Hospital of Larrissa, Greece.

Address: 19 Agorogianni A. Street, Larissa 413 35, Greece.

Tel. +30 2410 671796

Fax: +30 2410 611097

E-mail: gtzovaras@hotmail.com

QUALIFICATIONS

- Graduate of School of Medicine, Aristotelian University of Thessaloniki, Greece,

1988 (Graduation Degree: 8 out of 10 – “Very good”).

- Certificate of Specialty in Surgery, Heraklion, Greece, 1996 (CCST equivalent - exit

exams after completion of 5 year training in Surgery, according to the European

legislation)

- MD Thesis: “The effect of erythromycin on oesophageal motility”, Heraklion,

Greece 1996 (“Excellent”)

TRAINING IN SURGERY

(8 years in total: 5 yrs in Greece, ~2 yrs in the UK, 1 yr in Australia)

Basic surgical training in Greece: December 1990 – December 1995

December 1990 – April 1991

Depertment of Surgery, General District Hospital of Korinthos (Head: K. Derlopas)

Position: Senior House Officer

May 1991 - December 1995

University Hospital of Heraklion, Crete, Dept. of General Surgery (Head: Prof SJ

Vassilakis)

(Thoracic & Vascular Surgery attachment)

Position: Senior House Officer for 1,5 year

Registrar for 1,5 years

Senior Registrar for the last 2 years (Chief Resident)

April 1996 to December 1997

Royal Victoria Hospital, Belfast, N. Ireland, U.K

April 1996 to July 1997: Professorial Surgical Unit (Head: Prof BJ Rowlands)

August 1997 to December 1997: GI/Endocrine Unit (Head: CFJ Russell)

Position: Specialist Registrar (SpR)

January 1998 to January 1999

Flinders Medical Center, Adelaide, Australia

January 1998 to June 1998: Upper GI / HPB Unit (Prof. J. Toouli, R. Padbury, T.

Wilson, L.Kow)

July 1998 to January 1999: Colorectal Unit (D Wattchow, N McIntosh, R Sarr, D

Hill)

Position: Registrar

POST CCST CLINICAL APPOINTMENTS

- April 1996: Full Registration - General Medical Council (U.K)

- April 1996 to December 1997: SpR in Surgery, Royal Victoria Hospital, Belfast,

UK.

- January 1998 to January 1999: Registrar, Gastrointestinal Surgical Unit, Flinders

Medical Centre, Adelaide, Australia

- February 1999 to October 2005: Lecturer in Surgery and Consultant Surgeon,

University Hospital of Larissa, Greece.

- November 2005 – May 2011: Assistant Professor of Surgery and Consultant

Surgeon, University Hospital of Larissa, Greece.

- June 2011 – Μay 2016: Associate Professor of Surgery and Consultant Surgeon,

University Hospital of Larissa, Greece.

- June 2016 to present: Professor of Surgery, Head of The Department of Surgery

University Hospital of Larissa since Sept 2018.

MEMBERSHIPS

Registration with the Greek Medical Council, 1989

Registration with the General Medical Council, UK 1996

Fellow of the American College of Surgeons (ACS)

Member of the Hellenic Surgical Society

Member of the Hellenic Society for Digestive Surgery

Member of the Hellenic Society for Laparoendoscopic Surgery (Vice President)

Member of the Hellenic Society for the Surgery of Obesity (Board member)

Member of the European Society of Coloproctology (ESCP)

Member of the International Hepato-Pancreato-Biliary Association (IHPBA)

Member of the European Association for Endoscopic Surgery (EAES)

Member of the International Surgical Society (ISC)

Member of the International Federation for the Surgery of Obesity (IFSO)

CONGRESSES / MEETINGS

Attendance of more than 150 national and international Congresses and Meetings

with active involvement including oral or poster presentation, keynote lecture, panel

discussion, chairmen

Over 150 keynote lectures and panel discussions at national and international

meetings / congresses

TEACHING EXPERIENCE

Involved in the tutorial program of the third, forth and sixth year medical students

(theory and clinical practice) at the University of Thessaly

In charge of teaching “Clinical examination of the surgical patient” (3rd year medical

students)

Involved as tutor in official postgraduate courses on HPB and Colorectal surgery held

in Greece

Acute Trauma Life Support (American College of Surgeons) instructor (2002-2010)

Basic Surgical Skills Course (Royal College of Surgeons) instructor (2012-present)

Director of the Postgraduate Program “Colorectal Surgery” of the Faculty of

Medicine, University of Thessaly

COURSES / CONGRESS ORGANIZATION

1. Bariatric Surgery Meeting, Larissa, April 2012.

2. Colorectal Diseases - Minimally Invasive Surgery Course (International

Faculty), Larissa, June 2013.

3. Laparoscopic Hernia Repair Course (International Faculty), Larissa,

September 2014.

4. Course on laparoscopic surgery for colorectal cancer, Larissa, February 2015.

5. 9th National Congress for Bariatric Surgery, Larissa, October 2015.

6. International course on TaTME, Larissa, February 2017.

7. 7th National Congress of the Hellenic Association for Colorectal Surgery,

Larissa, December 2017.

8. Symposium on Upper GI Surgery in co-operation with the Hellenic Surgical

Society, Larissa, October 2019.

CLINICAL INTERESTS

Gastrointestinal, laparoendoscopic and bariatric surgery.

Since my appointment as a Lecturer initially (1999) at the University of Thessaly and

attached to the University Hospital of Larissa, I was of the pioneers in establishing,

developing and evolving advanced laparoscopic surgery at the University Hospital.

With my colleague D. Zacharoulis we initiated (2006) the laparoscopic bariatric

service in the area, counting more than 250 primary and revisional laparoscopic

bariatric operations.

During the last decade I have focused my clinical interest in laparoscopic colorectal

surgery - mainly for cancer – and have performed some 250 laparoscopic colorectal

procedures. Currently, approximately 55% of my total number of colorectal

operations are being performed laparoscopically, while the relevant national figure is

less than 5%.

RESEARCH

Clinical research with focus on gastrointestinal motility early in my training which

resulted in my PhD thesis

Also, involved in clinical projects in HPB area during my training in RVH, Belfast,

UK, as well as FMC, Adelaide, Australia

Since 2000, from different positions at the University of Thessaly, my research

interest is mainly clinical, including clinical trials focused on different aspects of

laparoscopic surgery (laparoscopic surgery and biliary tract, laparoscopic surgery and

hernia repair, laparoscopic surgery and anesthesia, laparoscopic bariatric surgery,

laparoscopic colorectal surgery). Also, during the last few years, actively involved in

all major clinical research projects of the European Society of Coloproctology

(ESCP).

Active supervisor of 15 MD Thesis projects (11 already completed successfully).

My research has resulted in 103 full publications included in Index Medicus (25 as

first and 27 as last author), obtaining more than 1.500 citations and an h-index of 28

(source: Scopus).

EDITORIAL POSITIONS

Member of the Editorial Board of Annals of Gastroenterology (responsible for

gastrointestinal surgery section)

Reviewer of the following international journals:

- Surgical Endoscopy

- HPB

- International Journal of Clinical Practice

- Digestive Surgery

- Journal of Clinical Anesthesia

- Hepatobiliary and Pancreatic Diseases International

- Annals of Gastroenterology

Author of chapters in 3 books (Greek editions):

Gastrointestinal Motility (SJ Vassilakis, ed)

HPB Surgery (C. Dervenis, ed)

Textbook of Surgery (I. Kanellos, ed)

LIST OF FULL PUBLICATIONS IN JOURNALS INCLUDED IN PUBMED

1. Anal manometry in patients with fissure-in-ano before and after internal

sphincterotomy.

Xynos E, Tzortzinis A, Chrysos E, Tzovaras G, Vassilakis JS.

Int J Colorect Dis 1993; 8: 125-128

2. Gallbladder emptying after antiulcer gastric surgery.

Pechlivanides G, Xynos E, Chrysos E, Tzovaras G, Fountos A, Vassilakis JS

Am J Surg 1994; 168:335-339

3. Reproducibility of Gallbladder Emptying Scintigraphic Studies.

Xynos E, Pechlivanides G, Zoras O, Chrysos E, Tzovaras G, Fountos A,

Vassilakis JS.

J Nucl Med 1994; 35: 835-839

4. Anorectal function after low anterior resection of the rectum.

Vassilakis JS, Pechlivanides G, Zoras O, Vrachasotakis N, Chrysos E, Tzovaras

G, Xynos E.

Int J Colorect Dis 1995; 10: 101-106

5. A Composite Score of Enterogastric Reflux Quantitation on 99mTc-HIDA

scintigraphy.

Zoras O, Chrysos E, Tzovaras G, Fountos A, Vassilakis SJ, Xynos E.

Hepato-Gastroenterology 1995; 42: 847-850

6. Εffect of hiatal hernia on esophageal manometry and pH-Metry in

Gastroesophageal Reflux Disease.

Kasapidis P, Vassilakis JS, Tzovaras G, Chrysos E, Xynos E.

Dig Dis Sci 1995; 40: 2724-2730

7. Effect of Nifedipine on rectoanal motility.

Chrysos E, Xynos E, Tzovaras G, Tsiaoussis J, Vassilakis JS.

Dis Colon Rectum 1996; 39: 212-216

8. The effect of intravenous erythromycin on esophageal motility in healthy

subjects.

Tzovaras G, Xynos E, Chrysos E, Mantides A, Vassilakis JS.

Am J Surg 1996; 171: 316-319

9. Laparoscopic Heller’s cardiomyotomy and Dor’s fundoplication for

esophageal achalasia.

Xynos E, Tzovaras G, Petrakis I, Chrysos E, Vassilakis JS.

J Laparoendosc Surg 1996; 6: 253-258

10. Roux-Y choledochojejunostomy and duodenojejunostomy for the

complicated duodenal diverticulum.

Vassilakis JS, Tzovaras G, Chrysos E, Mouzas I, Manousos O, Xynos E.

Am J Surg 1997; 174: 45-48

11. Cutaneous electrogastrography for the assessment of gastric myoelectrical

activity in type I diabetes mellitus.

Mantides A, Stephanides G, Kioulanis I, Tzovaras G, Epanomeritakis E, Xynos E.

Am J Gastroenterol 1997; 92: 1190-1193

12. Gallbladder fasting volume is reduced and gallbladder postprandial

emptying is enhanced by intravenous erythromycin.

Tsiaoussis I, Xynos E, Tzovaras G, Chrysos E, Glynos M, Vassilakis JS.

Dig Dis Sci 1998; 43: 178-182

13. Diagnosis and treatment of sphincter of Oddi dysfunction.

Tzovaras G, Rowlands BJ.

Br J Surg 1998; 85: 588-595

14. Enhancement of gastric emptying of solids by erythromycin in patients

with Roux-en-Y gastrojejunostomy.

Petrakis I, Vassilakis SJ, Karkavitsas N, Tzovaras G, Epanomeritakis E,

Tsiaoussis I, Xynos E.

Arch Surg 1998; 133: 709-714

15. A rare case of benign mesenchymoma of the breast in a man.

Chalkiadakis G, Petrakis I, Chrysos E, Tzovaras G, Datseris G, Vassilakis SJ

Eur J Surg Oncol, 1999; 25: 96-97

16. Santoriniplasty in the management of symptomatic pancreas divisum.

Tzovaras G, Rowlands BJ.

Eur J Surg 2000; 166: 400-404

17. Management of pancreatic pseudocysts.

Parks RW, Tzovaras G, Diamond T, Rowlands BJ.

Ann R Coll Surg Engl 2000; 82: 383-387

18. What are the risks of diagnostic and therapeutic endoscopic retrograde

cholangiopancreatography?

Tzovaras G, Shukla P, Kow L, Mounkley D, Wilson T, Toouli J.

Aust N Z J Surg 2000; 70: 778-782

19. Erythromycin enhances esophageal motility in patients with

gastroesophageal reflux.

Chsysos E. Tzovaras G, Epanomeritakis E, Tsiaoussis J, Vrachassotakis N,

Vassilakis JS, Xynos E.

Aust N Z J Surg 2001; 71: 98-102

20. Minimally invasive management of bile leak after laparoscopic

cholecystectomy.

Tzovaras G, Peyser P, Kow L, Wilson T, Padbury R, Toouli J

HPB 2001; 3: 165-168

21. Transduodenal sphincteroplasty and transampullary septectomy for

sphincter of Oddi dysfunction.

Tzovaras G, Rowlands BJ.

Ann R Coll Surg Engl 2002; 84: 14-19

22. Early and long-term results of surgery for severe necrotizing pancreatitis.

Tzovaras G, Parks RW, Diamond T, Rowlands BJ.

Dig Surg 2004; 21: 41-46

23. Effect of sodium valproate on esophageal motility in healthy subjects and

patients with gastroesophageal reflux.

Tzovaras G, Tsiaoussis J, Athanasakis E, Zoras O, Xynos E, Chrysos E.

Scand J Gastroenterol 2004; 39: 521-526

24. New trends in the management of colonic trauma.

Tzovaras G, Hatzitheofilou C

Injury 2005; 36: 1011-1015

25. One trocar laparoscopic placement of peritoneal shunt for hydrocephalus: a

simplified technique for obese patients.

Tepetes K, Tzovaras G, Paterakis K, Spyridakis M, Haftouras N, Hatzitheofilou

C. Clinical Neurology and Neurosurgery 2006; 108: 580-82

26. Laparoscopic cholecystectomy under spinal anaesthesia: A pilot study.

Tzovaras G, Fafoulakis F, Pratsas K, Georgopoulou S, Stamatiou G,

Hatzitheofilou C.

Surg Endosc 2006; 20: 580-582

27. Efficacy and safety of therapeutic ERCP in patients 90 years of age and

older.

Katsinelos P, Paroutoglou G, Kountouras J, Zavos C, Beltsis A, Tzovaras G.

Gastrointest Endosc 2006; 63: 417-23

28. Endoscopic mucosal resection of lateral spreading tumors of the colon using a

novel solution.

Katsinelos P, Paroutoglou G, Beltsis A, Chatzimavroudis G, Papaziogass b,

Katsinelos T, Rizos C, Tzovaras G, Vasiliadis I, Dimiropoulos S.

Surg Laparosc Endosc Percutan Tech 2006; 16: 73-7

29. Timing of laparoscopic cholecystectomy for acute cholecystitis: a prospective

non randomized study.

Tzovaras G, Zacharoulis D, Liakou P, Theodoropoulos T, Paroutoglou G,

Hatzitheofilou C.

World J Gastroenterol 2006; 12: 5528-31

30. Vascular injuries in laparoscopic cholecystectomy: an underestimated

problem.

Tzovaras G, Dervenis C.

Dig Surg 2006; 23: 370-74

31. The role of antibiotic prophylaxis in elective tension-free mesh inguinal

hernia repair.

Tzovaras G, Delikoukos S, Christodoulides G, Spyridakis M, Mantzos F, Tepetes

K, Athanassiou E, Hatzitheofilou C.

Int J Clin Pract 2007; 61: 236-39

32. Late-onset deep mesh infection after inguinal hernia repair.

Delikoukos S, Tzovaras G, Liakou P, Mantzos F, Hatzitheofilou C.

Hernia 2007; 11: 15-7

33. Live birth after laparotomy for concurrent heterotopic pregnancy and

appendicitis in a 6 weeks IVF pregnancy.

Daponte A, Spyridakis M, Ioannou M, Vanakara P, Tzovaras G, Hatzitheofilou C,

Messinis I.

Arch Gynecol Obstet 2007; 275: 397-99

34. Acute appendicitis due to appendiceal obstruction from a migrated biliary

stent.

Tzovaras G, Liakou P, Makryiannis E, Paroutoglou G.

Am J Gastroenterol 2007; 102: 195-96

35. Laparoscopic appendectomy: differnces between male and female patients

with suspected acute appendicitis.

Tzovaras G, Liakou P, Baloyiannis I, Spyridakis M, Mantzos F, Tepetes K,

Athanassiou E, Hatzitheofilou C.

World J Surg 2007; 31: 409-13

36. Modified radiofrequency-assisted liver resection: a new device.

Zacharoulis D, Tzovaras G, Rountas C, Poultsidis A, Katsogridakis E, Sioka E,

Hatzitheofilou C.

J Surg Oncol 2007; 96: 254-57

37. Laparoscopic cholecystectomy using spinal anaesthesia.

Tzovaras G, Pratsas K, Georgopoulou S.

Br J Anaesth 2007; 99: 744

38. A comparative study of standard ERCP catheter and hydrophilic guide wire

in the selective cannulation of the common bile duct.

Katsinelos P, Paroutoglou G, Kountouras J, Chatzimavroudis G, Zavos C,

Pilpilidis I, Tzelas G, Tzovaras G.

Endoscopy 2008; 40: 302-07

39. Spinal versus general anesthesia for laparoscopic cholecystectomy: interim

analysis of a controlled randomized trial.

Tzovaras G, Fafoulakis F, Pratsas K, Georgopoulou S, Stamatiou G,

Hatzitheofilou C.

Arch Surg 2008; 143: 457-501

40. Laparoscopic ventral hernia repair under spinal anesthesia: a feasibility

study.

Tzovaras G, Zacharoulis D, Georgopoulou S, Pratsas K, Stamatiou G,

Hatzitheofilou C.

Am J Surg 2008; 196: 191-194

41. Is there a role for drain use in elective laparoscopic cholecystectomy? A

controlled randomized trial.

Tzovaras G, Liakou P, Fafoulakis, Baloyiannis I, Zacharoulis D, Hatzitheofilou C.

Am J Surg 2009; 197:759-763

42. The fat content of small primary breast cancer interferes with

radiofrequency-induced thermal ablation.

Athanassiou E, Sioutopoulou D, Vamvakopoulos N, Karasavvidou F, Tzovaras G,

Tziastoudi E, Sakellariou M, Hatzitheofilou C.

Eur Surg Res 2009; 42: 54-58

43. Laparoscopic transabdominal preperitoneal repair of inguinal hernia under

spinal anesthesia: a pilot study.

Zacharoulis D, Fafoulakis F, Baloyiannis I, Sioka E, Georgopoulou S, Pratsas C,

Hantzi E, Tzovaras G.

Am J Surg 2009; 198: 456-459

44. Acute occlusion of the celiac axis and its branches with perforation of gastric

fundus and splenic infarction, findings on spiral computed tomography: a

case report.

Kelekis NL, Athanassiou E, Loggiti D, Moisidou R, Tzovaras G, Fezoulidis I

Cases J 2010; 3:82

45. Laparoendoscopic rendezvous: an effective alternative to a failed

preoperative ERCP in patients with cholecystocholedocholithiasis.

Tzovaras G, Baloyiannis I, Kapsoritakis A, Psychos A, Paroutoglou G,

Potamianos S.

Surg Endosc 2010; 24: 2603-06

46. Radiofrequency-assisted hemostasis in a trauma model: a new indication for

a bipolar device.

Zacharoulis D, Lazoura O, Sioka E, Tzovaras G, Rountas C, Spiropoulos S,

Zahari E, Hatzitheofilou C.

J Laparoendosc Adv Surg Tech 2010; 20: 421-6

47. Laparoscopic versus open appendectomy in men: a prospective randomized

trial.

Tzovaras G, Baloyiannis I, Kouritas V, Symeonidis D, Spyridakis M, Poultsidi A,

Tepetes K, Zacharoulis D.

Surg Endosc 2010; 24: 2987-92

48. Anatomy and complications following laparoscopic sleeve gastrectomy:

radiological evaluation and imaging pitfalls.

Triantafyllidis G, Lazoura O, Sioka E, Tzovaras G, Antoniou A, Vassiou K,

Zacharoulis D.

Obes Surg, 2011; 21: 473-478

49. Partially covered vs uncovered sphincterome and post-endoscopic

sphincterotomy bleeding.

Katsinelos P, Paroutoglou G, Kountouras J, Chatzimavroudis G, Zavos C,

Terzoudis S, Katsinelos T, Fasoulas K, Gelas G, Tzovaras G, Pilpilidis I.

World J Gastroenterol 2010; 16: 5077-83

50. Symptoms of gastroesophageal reflux following laparoscopic sleeve

gastrectomh are related to the final shape of the sleeve as depicted by

radiology.

Lazoura O, Zacharoulis D, Triantafyllidis G, Fanariotis M, Sioka E, Papamargaritis

D, Tzovaras G.

Obes Surg 2011; 21: 295-299

51. Open inguinal hernia repair with the use of a polyglycolic acid-trimethylene

carbonate absorbable mesh: a pilot study.

Efthymiou M, Symeonidis D, Koukoulis G, Tepetes K, Zacharoulis D, Tzovaras

G..

Hernia 2011; 15: 181-184

52. A novel experimental animal model of arterial stenosis based on

endovascular radiofrequency energy application.

Lazoura O, Zacharoulis D, Kanavou T, Rountas C, Katsimboulas M, Tzovaras G,

Habib N.

J Invest Surg 2011; 24: 123-128

53. Impact of intraoperative hypotension on hospital stay in major abdominal

surgery.

Tassoudis V, Vretzakis G, Petsiti A, Stamatiou G, Bouzia K, Melekos M,

Tzovaras G.

J Anesth 2011; 25: 492-499

54. Influence of the learning curve on safety and efficiency of laparoscopic sleeve

gastrectomy.

Zacharoulis D, Sioka E, Papamargaritis D, Lazoura O, Rountas C, Zachari E,

Tzovaras G.

Obes Surg 2012; 22: 411-415

55. Symptoms suggestive of dumping syndrome after provocation in patients

after laparoscopic sleeve gastrectomy.

Tzovaras G, Papamargaritis D, Sioka E, Zachari E, Baloyiannis I, Zacharoulis D,

Koukoulis G.

Obes Surg 2012; 22: 23-28

56. Experimental animal study of a novel radiofrequency endovascular occlusion

device.

Zacharoulis D, Lazoura O, Rountas C, Katsimboulas M, Mantzianas G, Tzovaras

G, Habib N.

Am J Surg 2011; 202: 103-109

57. Laparoendoscopic rendezvous versus preoperative ERCP and laparoscopic

cholecystectomy for the management of cholecysto-choledocholithiasis:

interim analysis of a controlled randomized trial.

Tzovaras G, Baloyiannis I, Zachari E, Symeonidis D, Zacharoulis D, Kapsoritakis

A, Paroutoglou G, Potamianos S.

Ann Surg 2012; 255: 435-439

58. Long-term results after laparoscopic transabdominal preperitoneal (TAPP)

inguinal hernia repair under spinal anesthesia.

Tzovaras G, Symeodidis D, Koukoulis G, Baloyiannis I, Georgopoulou S, Pratsas

C, Zacharoulis D.

Hernia 2012; 16: 641-645

59. Dumping symptoms and incidence of hypoglycaemia after provocation test at

6 and 12 months after laparoscopic sleeve gastrectomy.

Papamargaritis D, Koukoulis G, Sioka E, Bargiota A, Zacharoulis D, Tzovaras G.

Obes Surg 2012; 22: 1600-1606

60. Complicated cholelithiasis: an unusual combination of acute pancreatitis and

bouveret syndrome.

Baloyiannis I, Symeonidis D, Koukoulis G, Zachari E, Potamianos S, Tzovaras G.

Case Rep Gastroenterol 2012; 6: 459-464

61. The role of drain in laparoscopic sleeve gastrectomy

Zacharoulis D, Sioka E, Oikonomou K, Ppamargaritis D, Zachari E, Rountas C,

Tzovaras G.

Am Surg 2012; 78: E465-466

62. Open inguinal hernia repair with the use of polyglycolic acid/trimethylene

carbonate

absorbable mesh: a critical update of the long-term results.

Symeonidis D, Efthimiou M, Koukoulis G, Athanasiou E, Mamaloudis I,

Tzovaras G.

Hernia 2013; 17: 85-87

63. Changes in gut hormone profile and glucose homeostasis after laparoscopic

sleeve gastrectomy

Papamargaritis D, le Roux CW, Sioka E, Koukoulis G, Tzovaras G, Zacharoulis

D.

Surg Obes Relat Dis 2013; 9: 192-201

64. Influence of eating profile on the outcome of laparoscopic sleeve gastrectomy

Sioka E, Tzovaras G, Oikonomou K, Katsogridaki G, Zachari E, Papamargaritis

D, Pinaka O, Zacharoulis D.

Obes Surg 2013; 23: 501-508

65. Habib EndoHPB: a novel endobiliary radiofrequency ablation device. An

experimental study.

Zacharoulis D, Lazoura O, Sioka E, Potamianos S, Tzovaras G, Nicholls J,

Κoukoulis G, Habib N.

J Invest Surg 2013; 26: 6-10

66. Effect of pre-emptive pregabalin on pain intensity and postoperative

morphine consumption after laparoscopic cholecystectomy.

Sarakatsianou C, Theodorou E, Georgopoulou S, Stamatiou G, Tzovaras G.

Surg Endosc 2013; 27: 2504-2511

67. Open inguinal hernia repair with the use of polyglycolic acid/trimethylene

carbonate mesh: gross and pathologic assessment of the iguinal area at

reoperation for recurrence.

Symeonidis D, Efthimiou M, Koukoulis G, Mamaloudis I, Ioannou M, Tzovaras

G.

Hernia 2013; 17: 791-794

68. Laparoscopic left lateral sectionectomy with the use of Habib 4x: technical

aspects.

Zacharoulis D, Sioka E, Tzovaras G, Jiao LR, Habib N.

J Laparoendosc Adv Surg Tech A 2013; 23: 549-552

69. Laparoscopic ventral hernia repair in obese patients under spinal anesthesia.

Symeonidis D, Baloyiannis I, Georgopoulou S, Koukoulis G, Athanassiou E,

Tzovaras G.

Int J Surg 2013; 11: 926-929

70. Prospective non-randomized comparison of open versus laparoscopic

transabdominal preperitoneal (TAPP) inguinal hernia repair under different

anesthetic methods.

Symeonidis D, Baloyiannis I, Koukoulis G, Pratsas K, Georgopoulou S, Efthymiou

M, Tzovaras G.

Surg Today 2014; 44: 906-913

71. Complicated gallstones after laparoscopic sleeve gastrectomy.

Sioka E, Zacharoulis D, Zachari E, Papmargaritis D, Pinaka O, Katsogridaki G,

Tzovaras G

J Obes 2014;

72. Is it really worth it? Reply to: Selective use of bioabsorbable Gore BIO-A

plug and patch for groin hernia repais. Negro P et al, Hernia 2013; 17: 795-6

Symeonidis D, Efthimiou M, Koukoulis G, Tzovaras G.

Hernia 2014; 19(3): 533-534

73. Current status of laparoendoscopic rendez-vous in the treatment of

cholelithiasis with concomitant choledocholithiasis.

Baloyiannis I, Tzovaras G.

World J Gastrointest Endosc 2015; 7: 714-19

74. Desire for body contouring surgery after laparoscopic sleeve gastrectomy.

Sioka E, Tzovaras G, Katsogridaki G , Bakalis V, Bampalitsa S, Zachari E,

Zacharoulis D.

Aesthetic Plast Surg 2015; 39(6): 978-984

75. Differences in Anthropometric and Metabolic Parameters Between Subjects

with Hypoglycaemia and Subjects with Euglycaemia After an Oral Glucose

Tolerance Test Six Months After Laparoscopic Sleeve

Gastrectomy.Papamargaritis D, Zacharoulis D, Sioka E, Zachari E, Bargiota A,

Koukoulis G, Tzovaras G.

Obes Surg 2016; 26(11): 2747-2755

76. Spinal versus general anesthesia for transabdominal preperitoneal (TAPP)

repair of inguinal hernia: Interim analysis of a controlled randomized

trial.Sarakatsianou C, Georgopoulou S, Baloyiannis I, Chatzimichail M, Vretzakis

G, Zacharoulis D, Tzovaras G.

Am J Surg. 2017; 214(2): 239-245

77. Comparison of glucose homeostasis parameters between patients with high

and low risk of diabetes at 6 weeks and 6 months after sleeve

gastrectomy.Papamargaritis D, Tzovaras G, Sioka E, Zachari E, Koukoulis G,

Zacharoulis D.

Surg Obes Relat Dis. 2017; 13(6): 1016-1024

78. Does Conversion to Open of Laparoscopically Attempted Rectal Cancer

Cases Affect Short- and Long-Term Outcomes? A Systematic Review and

Meta-Analysis.

Gouvas N, Georgiou PA, Agalianos C, Tzovaras G, Tekkis P, Xynos E.

J Laparoendosc Adv Surg Tech A 2018; 28(2): 117-126

79. The use of over-the-scope clip in the treatment of persistent staple line leak

after re-sleeve gastrectomy: Review of the literature.

Zacharoulis D, Perivoliotis K, Sioka E, Zachari E, Kapsoritakis A, Manolakis A,

Tzovaras G.

J Minim Access Surg 2017; 13(3): 228-230

80. Esophageal motility after laparoscopic sleeve gastrectomy.

Sioka E, Tzovaras G, Tsiopoulos F, Papamargaritis D, Potamianos S,

Chatzitheofilou C, Zacharoulis D.

Clin Exp Gastroenterol 2017;10:187-194

81. Current knowledge and perception of bariatric surgery among Greek doctors

living in Thessaly.

Zacharoulis D, Bakalis V, Zachari E, Sioka E, Tsimpida D, Magouliotis D,

Tasiopoulou V, Chatedaki C, Tzovaras G.

Asian J Endosc Surg 2018; 11(2): 138-145

82. Laparoendoscopic rendezvous may be an effective alternative to a failed

preoperative endoscopic retrograde cholangiopancreatography in patients

with cholecystocholedocholithiasis.Tsiopoulos F, Kapsoritakis A, Psychos A,

Manolakis A, Oikonomou K, Tzovaras G, Baloyiannis I, Tsikrika A, Potamianos

S.

Ann Gastroenterol 2018; 31(1): 102-108

83. Laparoscopic total extraperitoneal hernia repair under regional anesthesia: a

systematic review of the literature.

Baloyiannis I, Perivoliotis K, Sarakatsianou C, Tzovaras G.

Surg Endosc 2018; 32(5): 2184-2192

84. One anastomosis gastric bypass versus Roux-en-Y gastric bypass for morbid

obesity: a meta-analysis.

Magouliotis DE, Tasiopoulou VS, Tzovaras G.

Clin Obes 2018; 8(3): 159-169

85. Administration of an Oral Hydration Solution Prevents Electrolyte and Fluid

Disturbances and Reduces Readmissions in Patients With a Diverting

Ileostomy After Colorectal Surgery: A Prospective, Randomized, Controlled

Trial.

Migdanis A, Koukoulis G, Mamaloudis I, Baloyiannis I, Migdanis I, Kanaki M,

Malissiova E, Tzovaras G.

Dis Colon Rectum 2018; 61(7): 840-846

86. Impact of Laparoscopic Sleeve Gastrectomy on Gastrointestinal Motility.

Sioka E, Tzovaras G, Perivoliotis K, Bakalis V, Zachari E, Magouliotis D,

Tassiopoulou V, Potamianos S, Kapsoritakis A, Poultsidi A, Tepetes K,

Chatzitheofilou C, Zacharoulis D.

Gastroenterol Res Pract 2018; 2018:4135813

87. Hair Loss After Laparoscopic Sleeve Gastrectomy.

Katsogridaki G, Tzovaras G, Sioka E, Perivoliotis K, Zachari E, Magouliotis D,

Tasiopoulou V, Chatedaki C, Zacharoulis D.

Obes Surg 2018; 28(12): 3929-3934

88. Do Difficult Airway Techniques Predispose Obese Patients to

Bronchospasm?

Ieropoulos P, Tassoudis V, Ntafoulis N, Mimitou I, Vretzakis G, Tzovaras G,

Zacharoulis D, Karanikolas M.

Turk J Anaesthesiol Reanim 2018; 46(4): 292-296

89. Banded vs. non-banded Roux-en-Y gastric bypass for morbid obesity: a

systematic review and meta-analysis.

Magouliotis DE, Tasiopoulou VS, Svokos KA, Svokos AA, Sioka E, Tzovaras G,

Zacharoulis D.

Clin Obes 2018; 8(6): 424-433

90. Evaluating the incidence of pathological complete response in current

international rectal cancer practice: the barriers to widespread safe deferral

of surgery.

2017 European Society of Coloproctology (ESCP) collaborating group.

Colorectal Dis 2018; 20 Suppl 6:58-68

91. An international multicentre prospective audit of elective rectal cancer

surgery; operative approach versus outcome, including transanal total

mesorectal excision (TaTME).

2017 European Society of Coloproctology (ESCP) collaborating group.

Colorectal Dis 2018; 20 Suppl 6: 33-46

92. The impact of conversion on the risk of major complication following

laparoscopic colonic surgery: an international, multicentre prospective audit.

2017 and 2015 European Society of Coloproctology (ESCP) collaborating groups.

Colorectal Dis 2018; 20 Suppl 6: 69-89

93. Association of mechanical bowel preparation with oral antibiotics and

anastomotic leak following left sided colorectal resection: an international,

multi-centre, prospective audit.

2017 European Society of Coloproctology (ESCP) collaborating group.

Colorectal Dis 2018; 20 Suppl 6: 15-32

94. Safety of primary anastomosis following emergency left sided colorectal

resection: an international, multi-centre prospective audit.

2017 European Society of Coloproctology (ESCP) collaborating group.

Colorectal Dis 2018; 20 Suppl 6: 47-57

95. Validation of the suter questionnaire after laparoscopic sleeve gastrectomy in

the Greek population.

Katsogridaki G, Zacharoulis D, Galanos A, Sioka E, Zachari E, Tzovaras G.

Clin Nutr ESPEN 2018; 28: 153-157

96. Thoracic epidural analgesia (TEA) versus patient-controlled analgesia (PCA)

in laparoscopic colectomy: a systematic review and meta-analysis.

Perivoliotis K, Sarakatsianou C, Georgopoulou S, Tzovaras G, Baloyiannis I.

Int J Colorectal Dis 2019; 34(1): 27-38

97. Hemodynamic effects of anesthesia type in patients undergoing laparoscopic

transabdominal preperitoneal inguinal hernia repair under spinal vs general

anesthesia.

Sarakatsianou C, Georgopoulou S, Tzovaras G, Perivoliotis K, Papadonta ME,

Baloyiannis I.

Hernia 2019; 23(2): 287-298

98. Current status of single-port versus multi-port approach in laparoscopic

inguinal hernia mesh repair: an up-to-date systematic review and meta-

analysis.

Perivoliotis K, Tzovaras G, Sarakatsianou C, Baloyiannis I.

Hernia 2019; 23(2): 217-233

99. Hyperuricemia and acute gout after laparoscopic sleeve gastrectomy.

Katsogridaki G, Tzovaras G, Sioka E, Perivoliotis K, Zachari E, Magouliotis D,

Tasiopoulou V, Zacharoulis D.

Clin Obes 2019; 9(2):e12296

100. One Anastomosis Gastric Bypass Versus Roux-en-Y Gastric Bypass for

Morbid Obesity: an Updated Meta-Analysis.

Magouliotis DE, Tasiopoulou VS, Tzovaras G.

Obes Surg 2019; 29(9): 2721-2730

101. Carbon Dioxide Embolism Associated With Transanal Total Mesorectal

Excision Surgery: A Report From the International Registries.

Dickson EA, Penna M, Cunningham C, Ratcliffe FM, Chantler J, Crabtree NA,

Tuynman JB, Albert MR, Monson JRT, Hompes R; International TaTME Registry

Collaborative.

Dis Colon Rectum 2019; 62(7): 794-801

102. Unveiling the malabsorptive nature of one anastomosis gastric bypass: a

closer look.

Magouliotis DE, Tzovaras G.

Surg Obes Relat Dis 2019; 15(9): 1645

103. Transcriptomic analysis of the aquaporin gene family and associated

interactors in rectal cancer.

Magouliotis DE, Tasiopoulou VS, Baloyiannis I, Mamaloudis I, Tzovaras G.

Microrna 2019