1. Department of Paediatric and Adult Movement Disorders and Neuropsychiatry; Institute of Neurogenetics; University of Lübeck; Lübeck Germany
2. Department of Neurology; University Medical Hospital Hamburg-Eppendorf; Hamburg Germany
3. Department of Paediatrics; University Medical Hospital Hamburg-Eppendorf; Hamburg Germany
4. Department of Neurology; Städtisches Klinikum Dessau; Dessau Rosslau Germany