1. Pediatric Oncology and Hematology; Erasmus MC-Sophia Children's Hospital; Rotterdam The Netherlands
2. Institute of Health Care Policy and Management/Institute for Medical Technology Assessment; Erasmus University; Rotterdam The Netherlands
3. Department of Pediatric Oncology/Hematology; VU University Medical Center; Amsterdam The Netherlands
4. Princess Máxima Center for Pediatric Oncology; Utrecht The Netherlands