1. Department of Pediatric Surgery, Hôpital Necker Enfants Malades, 149 Rue de Sévres, Paris, France
2. First Department of Pediatric Surgery, Panagiotis and Aglaia Kyriakou Children's Hospital, Athens, Greece
3. Department of Radiology, Panagiotis and Aglaia Kyriakou Children's Hospital, Thivwn-Levadias 1-3, Athens, Greece
4. Department of Pathology, Panagiotis and Aglaia Kyriakou Children's Hospital, Thivwn-Levadias 1-3, Athens, Greece