1. Pediatric Oncology Unit; Anti Cancer Center Oscar Lambret; Lille Cedex France
2. Pediatric Oncology Unit; Pediatric Hematology-Oncology Institute; Lyon Cedex France
3. Pediatric Surgery Department; Bicêtre Hospital; Le Kremlin-Bicêtre France
4. Pediatric Surgery Department; Pediatric Hematology-Oncology Institute; Lyon Cedex France
5. Pediatric Oncology Unit; Anti Cancer Center Gustave Roussy; Villejuif Cedex France
6. Pediatric Adolescent Young Adult Department; Institut Curie; Paris France
7. Pediatric Hematology-Oncology Unit; Pellegrin Hospital; CHU Bordeaux Bordeaux France