Institution: | a Gastroenterology Clinic, Henry Dunant Hospital, Athens, Greece b Hepato-Gastroenterology Unit, 1st Department of Internal Medicine-Propaedeutic, Medical School, Athens University, “Laikon” University General Hospital, Athens, Greece c Gastroenterology Unit, 2nd Department of Internal Medicine-Propaedutic, Medical School, Athens University, “Attikon” University General Hospital, Athens, Greece |