• Thoracic Surgery, KLININ FUER THORAX- UND ALLGEMEINCHIRURGIE, DEUTSCHES ROTES KREUZ, KLINIKEN BERLIN MITTE, Berlin, Germany (2013-2014)
• General Surgeon Certification (2009)
• Thoracic Surgery, DPT. OF THORACIC SURGERY, GENERAL HOPSITAL SISMANOGLION, Athens, Greece (2008)
• Obstetrics and Gynaecology, ARETAIEION HOSPITAL, 2nd DPT. OF GYNEACOLOLGY AND OBSTETRICS, UNIVERSITY OF ATHENS, (2007)
• General Surgery, ARETAIEION HOSPITAL, 2nd SURGICAL DPT. UNIVERSITY OF ATHENS, (2003-2008)
• Diploma in Medicine, MEDICAL SCHOOL OF ATHENS (1999)

Specialization and scientific interest:

• Minimal Invasive Surgery
• Surgical Oncology
• Surgical Proctology

• Seminar in Transanal Endoscopic Microsurgery (TEM), Knittlingen, Germany, (2016)
• Seminar in Transanal Endosonography, STADTSPITAL TRIEMLI, Zurich, Switzerland (2013)
• Seminar in Surgical Proctology, UNIVERSITAETSSPITAL, Zurich, Switzerland (2013)
• Seminar in Transanal Endoscopic Surgery (TEO), Magdeburg, Germany (2012)
• Minimal Invasive Surgery. Invasive Endoscopy. VIVANTES KLINIKUM SPANDAU, Berlin, Germany (2009-2012)
• Seminar of Advanced Laparoscopic Surgery and Surgery of Colon, IRCAD-EITS-LUIS PASTEUR UNIVERSITY, Strasburg, France (2008 & 2011)
• Postgraduate Course " Minimal Invasive Surgery. Robotic Surgery and Telesurgery", MEDICAL SCHOOL, UNIVERSITY OF ATHENS (2007-2009) 
• Doctoral Thesis: " Study of the adrenocortical function during acute hepatic failure. Experimental study in pigs." ARETAIEION HOSPITAL, 2nd SURGICAL DPT. UNIVERITY OF ATHENS, (2005-2008)

• Postgraduate Diploma of Specialization in Minimal Invasive Surgery (Master of Science) - MEDICAL SCHOOL, UNIVERSITY OF ATHENS (2009)
• Diploma of Certification in Laparoscopic Surgery - IRCAD-EITS-LUIS PASTEUR UNIVERSITY, Strasburg, France (2008)
• Nomination: ¨Doctor of Medicine" MEDICAL SCHOOL, UNIVERSITY OF ATHENS (2008)
• Prize of Ethos and Scientific Performance of trainee Surgeon, ARETAIEION HOSPITAL, 2nd SURGICAL DPT. UNIVERSITY OF ATHENS, (2003)

SCIENTIFIC PUBLICATIONS

• Kondi-Pafiti A, Kairi-Vassilatou E, Spanidou-Carvouni H, Kontogianni-Katsarou K, Anastassopoulos G, Papadias K, Smyrniotis V. “Extragenital cystic lesions of the peritoneum, mesentery and retroperitoneum of the female. Clinicopathological characteristics of 19 cases.” Eur J Gynaecol Oncol. 2005;26(3):323-6. PMID: 15991537.
• Fragulidis GP, Marinis AD, Anastasopoulos GV, Vasilikostas GK & Koutoulidis V, “Management of a ruptured bile duct cyst”, J Hepatobiliary Pancreat Surg. 2007;14(2):194-6. Epub 2007 Mar 27. PMID: 17384913.
• Fragulidis G, Marinis A, Polydorou A, Konstantinidis C, Anastasopoulos G, Contis J, Voros D, Smyrniotis V. “Managing injuries of hepatic duct confluence variants after major hepatobiliary surgery: An algorithmic approach”, World J Gastroenterol. 2008 May 21;14(19):3049-53. PMID: 18494057.
• Anastasopoulos G, Marinis A, Konstantinidis C, Theodosopoulos T, Fragulidis G, Vassiliou I. “Adenocarcinoma of the third portion of the duodenum in a man with CREST syndrome.” World J Surg Oncol. 2008 Oct 1;6:106. PMID: 18828905.
• Marinis A, Yiallourou A, Samanides L, Dafnios N, Anastasopoulos G, Vassiliou I, Theodosopoulos T. “Intussusception of the bowel in adults: A review.” World J Gastroenterol. 2009 Jan 28;15(4):407-11. Review. PMID: 19152443.
• Marinis A, Gkiokas G, Anastasopoulos G, Fragulidis G, Theodosopoulos T, Kotsis T, Mastorakos D, Polymeneas G, Voros D. “Surgical Techniques for the Management of Enteroatmospheric Fistulae.” Surg Infect (Larchmt). 2009 Feb;10(1):47-52 PMID: 19245361.
• Nikolaos Dafnios, Georgios Anastasopoulos, Athanasios Marinis, Andreas Polydorou, Georgios Gkiokas, Georgios Fragulidis, Panayiotis Athanasopoulos and Theodosios Theodosopoulos. “Esophagopericardial fistula as a rare complication after total gastrectomy for cancer: report of a case”. World J Surg Oncol. 2009 Jul 6;7(1):58. (doi:10.1186/1477-7819-7-58) PMID: 19580643.
• Theodosios Theodosopoulos, Anneza Yiallourou, Maria Kyriazi, Georgios Anastasopoulos, Evi Kairi-Vassilatou, Nicolaos Dafnios and Ioannis Vassiliou. “Unilateral simultaneous renal oncocytoma and angiomyolipoma: a case report”. Cases J. 2009; 2: 9093. Published online 2009 November 26. doi: 10.1186/1757-1626-2-9093. PMCID: PMC2803890.
• Marinis A, Stamatakis E, Tsaroucha A, Dafnios N, Anastasopoulos G, Polymeneas G, Theodosopoulos T. “Safety and effectiveness of outpatient laparoscopic cholecystectomy in a teaching hospital: a prospective study of 110 consecutive patients.” BMC Res Notes. 2010 Jul 22;3(1):207. PMID: 20649998.
• Marinis A, Anastasopoulos G, Polymeneas G. “A solid pseudopapillary tumor of the pancreas treated with laparoscopic distal pancreatectomy and splenectomy: a case report and review of the literature.” J Med Case Reports. 2010 Nov 29;4(1):387. PMID: 21114814.
• D.Voros, K. Maria, G.Anastasopoulos, S.Drakopoulou, E. Kairi, V. Michalaki. “Vena cava resections en bloc with retroperitoneal liposarcoma.” Poster Session: Soft Tissue Sarcoma, 36th Congress of the European Society of Surgical Oncology, 14-16 September 2016, Krakow, Poland.