1. Department of Pediatric Surgery, University College London Institute of Child Health, London, United Kingdom
2. Department of Pediatric and Adolescents Surgery, Medical University of Graz, Graz, Austria
3. Department of Pediatric Surgery, National Children's Research Centre, Dublin, Ireland
4. Department of Pediatric Surgery, Hospital Universitario La Paz, Madrid, Spain
5. Department of Pediatric Surgery, Klagenfurt General Hospital, Klagenfurt, Austria
6. Neonatal Surgery Unit, Bambino Gesù Children's Research Hospital, Rome, Italy
7. Department of Pediatric Surgery, Faculty of Medicine, University Children's Hospital, Belgrade, Serbia
8. Department of Pediatric Surgery, Erasmus MC, Sophia in Erasmus MC Sophia Childrens' Hospital, Rotterdam, The Netherlands
9. Department of Pediatric Surgery, Hannover Medical School, Hannover, Niedersachsen, Germany
10. Department of Pediatric Surgery, University Hospital of Padua, Padova, Italy
11. Department of Pediatric Surgery, Hospital for Children and Adolescents, Helsinki, Finland