1Pediatric Hemato-Oncology Department, Hospital Universitario y Politécnico La Fe, European Reference Network PAEDCAN member, Valencia, Spain
2Pediatric Hemato-Oncology Department, Hospital Universitario La Paz, European Reference Network PAEDCAN member, Madrid, Spain
3Pediatric Hemato-Oncology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
4Pediatric Department, Hospital Universitario Vall d´Hebron, European Reference Network PAEDCAN member, Barcelona, Spain
5Pediatric Onco-Hematology Unit, Hospital Cruces, and Pediatric Oncology Group Biobizkaia Health Research Institute, Barakaldo, Spain
6Pediatric Oncology Department, Hospital Universitario Virgen del Rocío, European Reference Network PAEDCAN member, Sevilla, Spain
7Clinical and Translational Oncology Research Group, Investigation Institute La Fe, Valencia, Spain
8Pediatric Hematology-Oncology Department, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
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