Stojanov D,Slavkovic A, Bukvić N
Center of Radiology, Department of Pediatric Surgery, Clinical Centre Niš, Serbia, Department of Pediatric Surgery, Clinical Hospital Centre Rijeka, Croatia
Kavvadas G, Chamzin A, Dourakis SP
2nd Department of Internal Medicine, Athens University Medical School, Endoscopic Surgery Unit, Hippokratio Hospital, Athens, Greece