1)Ειδικότητα Γενικής Χειρουργικής, University of Iowa Hospitals and Clinics, Department of Surgery, Iowa City, USA, 1998-2004
2) Research Fellowship in Transplantation Surgery, University of Pittsburgh Medical Center, THomas Starzl Transplant Institute, 2000-2001
2)Clinical and Research Fellowship in Transplantation Surgery and Hepatobiliary Surgery, Massachusetts General Hospital, Harvard Medical School, 2004-2006
