1. Surgical Department, Argos General Hospital, 21200 Argos, Greece
2. Department Internal Medicine, Argos General Hospital, 21200 Argos, Greece
3. Second Department of Surgery, 417 NIMTS-Nosileutiko Idrima Metohikou Tameiou Stratou (Military Veterans' Fund Hospital), Athens, Greece
4. 1st Department of Propaedeutic Surgery, Hippokrateion Hospital, Athens Medical School, University of Athens, Q. Sofias 114 Avenue, 11527 Athens, Greece