Pediatric heamtologist/Oncologist. Senior physician. Specific focus on non-malignant hematological disorders since 1996. Areas of expertise: congenital anemias incl hemoglobinopathies. Iron overload. Conegital erythrocytoses. Polycythemia vera and other MPN in childhood and adolescence. Author of German guidelines on thalassemia, iron overload, sickle cell disease. Participation in other guidelines. Member of the MPN/MPNr EuroNet. Member of the Board of the German Society of Pediatric Oncology and Hematology. EHA-Member.