1. Department of Pediatric Oncology and Hematology University Hospital of Caen, Normandy Caen France
2. University of Caen, Normandy Caen France
3. Department of Pediatric Oncology and Hematology University Hospital of Rouen, Normandy Rouen France
4. Department of Pediatric Oncology Gustave Roussy Institute VilleJuif France
5. Department of Pathology University Hospital of Caen Caen France
6. Department of Pathology Hôpital Henri Mondor APHP Créteil France
7. Department of Hematology University Hospital of Caen Caen France