1. Department of Pediatric Neurology University Children's Hospital Tübingen Tübingen Germany
2. Department of General Pediatrics Hematology and Oncology University Children's Hospital Tübingen Tübingen Germany
3. Research Institute Children's Cancer Center Hamburg Hamburg Germany
4. Department of Pediatrics University Medical Center Hamburg‐Eppendorf Hamburg Germany
5. Division of Pediatric Stem Cell Transplantation and Immunology Department of Pediatric Hematology and Oncology University Medical Center Hamburg‐Eppendorf Hamburg Germany
6. Center for Neurology and Hertie Institute for Clinical Brain Research University of Tübingen Tübingen Germany
7. German Center for Neurodegenerative Diseases (DZNE) Tübingen Germany