1. Pediatric Surgery Department, Penteli Children’s Hospital, Ippokratous 8, Penteli, Athens, Hellas, Greece
2. General Surgery Department, Tzanio General Hospital, Leoforos Afentouli ke Zanni, Piraeus, Hellas, Greece
3. Histopathology Department, Sismanoglio General Hospital, Sismanogliou 37, Marousi, Hellas, Greece