1. Pediatric Oncology Unit; Fondazione IRCCS Istituto Nazionale Tumori; Milano Italy
2. SIREDO Oncology Center (Care; Innovation and Research for Children; Adolescents and Young Adults with Cancer); Institut Curie; Paris France
3. Pediatric Hematology and Oncology Division; Padova University; Padova Italy
4. Institut d'Hematologie et d'Oncologie Pediatrique; Centre Leon Berard; Lyon France