Affiliation: | 1. First Department of Surgery, National and Kapodistrian University of Athens, Laikon General Hospital, Athens, Greece;2. Fourth Department of Surgery, National and Kapodistrian University of Athens, Attikon University Hospital, Athens, Greece;3. Surgical Department, General Hospital of Ierapetra, Ierapetra, Greece;4. First Department of Propaedeutic Surgery, National and Kapodistrian University of Athens, Hippocration Hospital, Athens, Greece |