1 Department of Pediatric Surgery, "Attikon" General University Hospital, Medical School, National and Kapodistrian University of Athens, 1 Rimini Street str, Athens, 124 62, Greece. natasa_dimo@hotmail.com.
2 Third Department of Pediatrics, "Attikon" General University Hospital, National and Kapodistrian University of Athens, Athens, Greece.
3 Third Department of Surgery, "Attikon" General University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
4 Department of Gastroenterology, General Hospital "Hippokration", Athens, Greece.
5 Department of Pediatric Surgery, "Attikon" General University Hospital, Medical School, National and Kapodistrian University of Athens, 1 Rimini Street str, Athens, 124 62, Greece.
6 Second Department of Pathology, Medical School, "Attikon" General University Hospital, National and Kapodistrian University of Athens, Athens, Greece.