1. Pediatric Onco-Hematology, Stem Cell Transplantation and Cellular Therapy Department, Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Regina Margherita Children's Hospital, Torino, Italy.
2. University of Torino, Torino, Italy.
3. Pediatric Oncology Department, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milano, Italy.
4. AYA and Pediatric Radiotherapy Department, Centro di Riferimento Oncologico IRCCS, Aviano, Italy.
5. Department of Pediatric Hematology and Oncology and of Cell and Gene Therapy, Scientific Institute for Research and Healthcare (IRCCS), Bambino Gesù Childrens' Hospital, Rome, Italy.
6. Pediatric Oncology Department, Ospedale Vito Fazzi, Lecce, Italy.
7. Department of Pediatrics, University of Milano-Bicocca, Fondazione MBBM/Ospedale San Gerardo, Monza, Italy.
8. Hematology and Oncology Unit, Department of Women's and Children's Health, University of Padua, Padua, Italy.
9. Pediatric Hematology-Oncology Division, Department of Pediatrics, University of Bari, Bari, Italy.
10. Cancer Epidemiology Unit, Department of Medical Sciences, University of Turin, Turin, Italy.
11. Pediatric/Hematology/Oncology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy.
12. Pediatric Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.