Chairman, Director Clinic and Policlinic of Pediatric Hematology and Oncology University Medical Center Hamburg-Eppendorf

Dean Medical Faculty University Medical Center Hamburg-Eppendorf

Scientific Director Children's Cancer Research Institute (CCRI), Vienna

Former Head of the dept. Pediatrics, Pediatric Hematology and Oncology University Medical Center Hannover, Owner of the Lower Saxony-Professorhip for Molecular Hematopoiesis