1. Institute of Neurogenetics University of Lübeck Lübeck Germany
2. Department of Neurology University of Lübeck Lübeck Germany
3. Department of Psychiatry and Psychotherapy University of Lübeck Lübeck Germany
4. Center for Genomic Medicine Massachusetts General Hospital Boston Massachusetts USA
5. The Morton and Gloria Shulman Movement Disorders Centre and the Edmond J Safra Program in Parkinson's Disease, Toronto Western Hospital University of Toronto Toronto Ontario Canada
6. Institute of Medical Biometry and Statistics University of Lübeck Lübeck Germany
7. Movement Disorders Unit, Neurology Service, Internal Medicine Department Hospital das Clínicas, The Federal University of Minas Gerais Belo Horizonte Brazil
8. Department of Neurology Harvard Medical School and Massachusetts General Hospital Charlestown Massachusetts USA