[1] Sapienza University of Rome,Department of Pediatrics, Pediatric Gastroenterology and Liver Unit
[2] University Hospital Umberto I,Pediatric Emergency Unit
[3] Sapienza University of Rome,Pediatric Radiology Unit
[4] Azienda Policlinico Umberto I,undefined
[5] Sapienza University of Rome,undefined
[6]
Azienda Policlinico Umberto I,undefined