1. Department of Pediatric Surgery, Hacettepe University Faculty of Medicine, Ankara, Turkey
2. Department of Pediatric Surgery, AP-HM, Marseille, Provence-Alpes-Côte d'Azur, France
3. Centre of Pediatric Surgery, Hannover Medical School and “Auf der Bult” Children's Hospital Hannover, Hannover, Germany
4. Department of Pediatric Surgery, Hospital La Paz, Madrid, Spain
5. Department of Pediatric Surgery, Umberto Bosio Center for Digestive Diseases The Children Hospital AO SS Antonio e Biagio e Cesare Arrigo Alessandria, Italy, EU
6. Department of Medical and Surgical Neonatology, Azienda Ospedaliero Universitaria Meyer, Firenze, Toscana, Italy
7. Department of Paediatric Surgery, Great Ormond Street Hospital for Children, London, United Kingdom
8. Department of Pediatric Surgery, Amsterdam UMC, University of Amsterdam & Vrije Universiteit, Amsterdam, Noord-Holland, the Netherlands
9. Division of Pediatric Surgery, Department of Surgery, Kansai Medical University, Osaka, Japan
10. Department of Pediatric Surgery, University Children's Hospital, Belgrade, Serbia
11. Department of Pediatric Surgery, Riga Stradins University & Children's Clinical University Hospital, Riga, Latvia
12. University Surgery Unit, Faculty of Medicine, University of Southampton, United Kingdom