1. Division of Oncology-Hematology, Department of Pediatrics,
Kantonsspital Aarau AG, Aarau, Switzerland
2. University of Bern, Institute of Social and Preventive Medicine, Bern,
Switzerland
3. Swiss Child Cancer Association, Olten, Switzerland
4. Childhood Cancer Switzerland, Basel, Switzerland
5. Division of Oncology-Hematology, University Children’s Hospital
Basel (UKBB) and University of Basel, Basel, Switzerland
6. Department of Pediatrics, McMaster Children’s Hospital and
McMaster University, Hamilton, Canada