1. Division of Neurology Department of Medicine Parkinson's Disease and Movement Disorders Center The Ottawa Hospital Research Institute University of Ottawa Brain and Mind Institute Ottawa Canada
2. Department of Epidemiology and Biostatistics National School of Public Health Carlos III Institute of Health and La Red de Investigación en Servicios de Salud en Enfermedades Crónicas (REDISSEC) Madrid Spain
3. Department of Neurology Innsbruck Medical University Innsbruck Austria
4. Movement Disorders Unit Neurology Service Internal Medicine Department The Federal University of Minas Gerais Belo Horizonte Minas Gerais Brazil
5. Neurology and Clinical Pharmacology University of Lisbon Institute of Molecular Medicine Lisbon Portugal
6. George‐Huntington‐Institute Muenster Germany
7. CHDI Foundation/CHDI Management Princeton New Jersey USA
8. Department of Neurological Sciences Rush University Medical Center Chicago Illinois USA
9. National Center of Epidemiology and Centro de Investigación Biomedica en Red de Enfermedades Neurodegenerativas (CIBERNED) Carlos III Institute of Health Madrid Spain
10. Department of Neurology Hospital Universitário Hermanos Yagüe Burgos Spain