1. Institute of Neurogenetics; University of Lübeck; Lübeck; Germany
2. Department of Neurology; Flinders Medical Centre; Adelaide; Australia
3. Departments of Neurology and Neurogenetics; Royal North Shore Hospital and Kolling Institute of Medical Research, University of Sydney; Sydney; Australia
4. Department of Neurology; Academic Medical Center; Amsterdam; the Netherlands
5. Institute of Human Genetics; University of Lübeck; Lübeck; Germany
6. Institute of Music Physiology and Musicians' Medicine; Hanover University of Music, Drama, and Media; Hanover; Germany
7. Clinic of Neurology; Kassel School of Medicine; Kassel; Germany
8. Morton and Gloria Shulman Movement Disorders Center and the Edmond J. Safra Program in Parkinson's Disease; Toronto Western Hospital, University of Toronto; Toronto; Ontario; Canada
9. Department of Neurology; University Medical Center Eppendorf; Hamburg; Germany
10. Department of Neurology; School of Medicine, University of Belgrade; Belgrade; Serbia
11. Departments of Neurology and Otolaryngology; Mount Sinai School of Medicine; New York; NY
12. MRI Unit; Department of Radiology; Flinders Medical Centre; Adelaide; Australia
13. Department of Genetics and Genomic Sciences; Mount Sinai School of Medicine; New York; NY
14. Department of Otorhinolaryngology; Head and Neck Surgery, Leiden University Medical Center; Leiden; the Netherlands
15. Department of Neurology; University Medical Center Groningen, University of Groningen; Groningen; the Netherlands