1. Pediatrics and Adolescent Medicine Aarhus University Hospital Aarhus Denmark
2. Department of Clinical Medicine, Faculty of Health Aarhus University Aarhus Denmark
3. Department of Hematology Aarhus University Hospital Aarhus Denmark
4. Pediatrics and Adolescent Medicine Copenhagen University Hospital Copenhagen Denmark
5. Childhood Cancer Research Group Danish Cancer Society Research Center Copenhagen Denmark
6. Department of Renal Medicine Aarhus University Hospital Aarhus Denmark
7. Department of Biomedicine, Faculty of Health Aarhus University Aarhus Denmark