1. Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Pisana; Rome Italy
2. Institut National de la Santé et de la Recherche Médicale (INSERM) CIC9302-UMR825 and Departments of Neurosciences and Clinical Pharmacology; Toulouse University Hospital and University of Toulouse III; Toulouse France
3. Lille North of France University, Lille University Hospital, Movement Disorders Unit; INSERM U837 Lille France
4. Department of Neurology, Juntendo University School of Medicine; Tokyo Japan
5. Department of Neurology; University of South Florida; Tampa Florida USA
6. Edmond J. Safra Program in Parkinson's Disease; Toronto Western Hospital, University of Toronto; Toronto Ontario Canada
7. Department of Neurology; Medical University of Innsbruck; Innsbruck Austria
8. Department of Neurology; School of Medicine; Duke University Medical Center; Durham North Carolina USA
9. Neurology Service, Hospital Clinic, Barcelona, Spain; Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); Barcelona Spain
10. Novartis Pharmaceuticals Corporation; East Hanover New Jersey USA
11. Novartis Pharma AG; Basel Switzerland
12. Paracelsus-Elena-Klinik; Kassel; Department of Neurosurgery; University Medical Center of Goettingen; Goettingen Germany