1. Institute of Social and Preventive Medicine University of Bern Bern Switzerland
2. CANSEARCH research platform in pediatric oncology and hematology, Department of Pediatrics, Gynecology and Obstetrics University of Geneva Geneva Switzerland
3. Graduate School for Health Sciences University of Bern Bern Switzerland
4. Graduate School for Cellular and Biomedical Sciences University of Bern Bern Switzerland
5. Division of Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital Bern University Hospital University of Bern Bern Switzerland
6. Bavarian Care and Nursing Authority Amberg Germany
7. Department for Phoniatrics and Pedaudiology University Hospital Münster, University of Münster Münster Germany
8. Department of ENT, Head and Neck Surgery, Inselspital Bern University Hospital, University of Bern Bern Switzerland
9. Department of Pediatric Oncology and Hematology University Children's Hospital Basel (UKBB), University of Basel Basel Switzerland
10. Department of Women, Child and Adolescent, Division of Pediatric Oncology and Hematology Geneva University Hospital, University of Geneva Geneva Switzerland