1. Division of Pediatric Surgery Mayo Clinic Rochester Minnesota USA
2. Division of General Pediatric Surgery Department of Surgery Johns Hopkins University School of Medicine Baltimore Maryland USA
3. Department of Pediatric Surgery and Urology University Hospital Giessen‐Marburg Giessen Germany
4. Department of Precision and Regenerative Medicine and Jonic Area (DiMePRe‐J) Azienda Ospedaliero‐Universitaria Consorziale Pediatric Hospital Giovanni XXIII Bari Italy
5. Department of Sarcoma Moffitt Cancer Center Tampa Florida USA
6. Department of Orthopedics James Cancer Hospital and Nationwide Children's Hospital Columbus Ohio USA
7. Division of Pediatric Surgery Ann & Robert H Lurie Children's Hospital of Chicago Northwestern University Chicago Illinois USA
8. Division of Pediatric General and Thoracic Surgery Cincinnati Children's Hospital Medical Center University of Cincinnati Cincinnati Ohio USA