1. Department of Pediatric Haematology and Oncology University Hospital of Caen, 14000 Caen France
2. Department of Pediatric Surgery Université de Paris, Hôpital Necker Enfants‐Malades, Assistance Publique ‐ Hôpitaux de Paris Paris France
3. SIREDO Oncology Centre (Care, Innovation and Research for Children, Adolescents and Young Adults with Cancer), Institut Curie PSL University Paris France
4. National Reference Centre for Rare Gynecological Diseases (PGR) Paris France
5. Department of Biostatistics and Clinical Research University Hospital of Caen Normandy Caen France
6. Centre Leon Bernard Pediatric Hemato‐Oncology Institute (IHOPe) Lyon France
7. Pediatric Surgery Department Femme‐Mère‐Enfant University Hospital, 59, boulevard Pinel, 69677 Bron France
8. Anatomy‐Cytology‐Pathology Department, Women‐Mother and Child Hospital, Hospices Civils de Lyon Lyon France
9. CHU Lille, Centre de Référence du Développement Génital DEV GEN, Service de Chirurgie Pédiatrique, Hôpital Jeanne de Flandres, 59000 Lille France
10. Anatomy‐Cytology‐Pathology Department, CHU Lille Lille France
11. Department of Pediatric Surgery Rennes University Hospital Rennes France
12. Department of Pediatric Surgery CHU de Nantes, Hôtel‐Dieu, 1, Place Alexis‐Ricordeau, 44000 Nantes France
13. Department of Pediatric Surgery University Hospital of Saint‐Etienne, CHU de Saint‐Etienne Hôpital Nord Saint‐Etienne Cedex 2 France
14. Paediatric Surgery Department University Hospital of Besancon Besancon France
15. Paediatric Surgery Department Angers University Hospital Angers France
16. Anatomy‐Cytology‐Pathology Department Centre Hospitalier Universitaire d'Angers Angers France
17. Paediatric Surgery Department Amiens University Hospital Amiens France
18. Department of Pediatric Surgery University Hospital of Montpellier Montpellier France
19. Service d'anatomie Pathologique, CHU Dupuytren, 2, Avenue Martin‐Luther‐King, 87042 Limoges Cedex France
20. Department of Pediatric Surgery Hôpital des Enfants, 8 Avenue Dominique Larrey, 87042 Limoges Cedex France
21. Department of Pediatric Surgery Groupe Hospitalier Pellegrin, Hôpital d'enfants Bordeaux France
22. AP‐HP, Hôpital Universitaire Robert‐Debré, Pediatric Urology Department, Reference Center for Rare Diseases (CRMR), Malformations Rares des Voies Urinaires (MARVU) Université de Paris Paris France
23. Paediatric Surgery Department Trousseau Hospital ‐ Assistance Publique des Hôpitaux de Paris Paris France
24. Paediatric Surgery Department Groupement Hospitalier Paris Sud (GHUPS), Hôpital Bicêtre Le Kremlin‐Bicetre France
25. Pediatric Surgery Department Hôpital d'enfants de la Timone Marseille France
26. Pathology Department CHU de Nantes, Hôtel‐Dieu, 1, Place Alexis‐Ricordeau, 44000 Nantes France
27. Department of Pediatric Surgery University Hospital of Caen, Avenue de la Côte de Nacre, 14000 Caen France
28. Laboratory INSERM U1086, ANTICIPE, Centre François Baclesse Caen France