1. Pediatric Surgery Department, Assistance Publique des Hôpitaux de Marseille, Marseille, France
2. Pediatric Surgery Department, Hacettepe Universitesi Tip Fakultesi, Ankara, Turkey
3. Department of Pediatric Surgery, Hannover Medical School, Hannover, Germany
4. UO Chirurgia Pediatrica, AON SS Antonio e Biago e Cesare Arrigo, Alessandria, Italy
5. Pediatric Surgery Department, Hospiltal Infantil La Paz, Madrid, Spain
6. Pediatric Intensive Care Unit, Hôpital La Timone, Assistance Publique des Hôpitaux de Marseille, Marseille, France
7. Pediatric Radiology Department, Assistance Publique des Hôpitaux de Marseille, Marseille, France
8. Department of Paediatric Surgery, GOS Hospital for Children, London, United Kingdom of Great Britain and Northern Ireland
9. Pediatric Surgery Department, Emma Childrens' Hospital UMC, Amsterdam, the Netherlands
10. Pediatric Surgery Department, Kansai Medical University, Osaka, Japan
11. Pediatric Surgery Unit, Medical Faculty University of Belgrade, Belgrade, Serbia
12. Pediatric Surgery Department, Children's Clinical University Hospital, Rīga, Latvia
13. Neonatal Surgery Unit, Azienda Ospedaliero-Universitaria Meyer, University of Florence, Florence, Italy
14. University Surgery Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom of Great Britain and Northern Ireland