1. Departments of Psychiatry, Neurology, Neuroscience, and Pharmacology and Huntington's Disease Center Johns Hopkins University School of Medicine Baltimore MD USA
2. George Huntington Institut, Head, European HD Network (EHDN) Huntington Center University of Munster Munster Germany
3. Department of Neurology in the Movement Disorders Unit, Neurology Service Internal Medicine Department of the Federal University of Minas Gerais Belo Horizonte MG Brazil
4. Neurology Department, Huntington Disease Service Westmead Hospital and Sydney University Medical School Sydney Australia
5. Virginia Commonwealth University Richmond VA USA
6. Institute of Cognitive and Clinical Neurosciences, School of Psychological Sciences Monash University Victoria Australia
7. Department of Medical Genetics and Centre for Molecular Medicine and Therapeutics The University of British Columbia Vancouver Canada
8. The First Affiliated Hospital Sun Yat‐Sen University Guangzhou China
9. Department of Neurology University Hospital of Ulm Ulm Germany
10. HD Community Member
11. Cure HD Initiative (CHDI) Management/CHDI Foundation Princeton NJ USA
12. European Huntington's Disease Network University Hospital of Ulm Ulm Germany
13. Departments of Neurology and Psychiatry, and Huntington's Disease Center Johns Hopkins University School of Medicine Baltimore MD USA
14. Huntington's Disease Centre, University College London Queen Square Institute of Neurology London United Kingdom
15. UK Dementia Research Institute University College London London United Kingdom