1. Swiss Childhood Cancer Registry; Institute of Social and Preventive Medicine; University of Bern; Switzerland
2. Department of Health Sciences and Health Policy; University of Lucerne; Switzerland
3. Institute of Primary and Community Care; Lucerne; Switzerland
4. Swiss Paraplegic Research; Nottwil; Switzerland
5. Pediatric Hematology/Oncology Unit; University Children's Hospital Basel (UKBB); University of Basel; Switzerland
6. Department of Oncology; University Children's Hospital Zurich; Switzerland