1. German Center for Neurodegenerative Diseases Munich Germany
2. Department of Neurology, Klinikum rechts der IsarTechnical University of Munich Munich Germany
3. Parkinson’s Disease and Movement Disorders Department, HYGEIA Hospital and Aiginiteion HospitalUniversity of Athens Athens Greece
4. European University of CyprusMedical School Nicosia Cyprus
5. Department of NeurologyHannover Medical School Hannover Germany