1. 2nd Department of Surgery, Aretaieion Hospital, School of Medicine National and Kapodistrian University of Athens, Athens, Greece
2. Department of Pathology, Aretaieion Hospital, School of Medicine National, Kapodistrian University of Athens, Athens, Greece
3. 1st Department of Radiology, Aretaieion Hospital, School of Medicine National, Kapodistrian University of Athens, Athens, Greece