1. Department of Psychiatry and Department of Neurology, Georgetown University, Washington, DC, USA
2. Department of Psychiatry, Leiden University Medical Centre, Leiden; and Mental Health Care Centre Delfland, Delft, The Netherlands
3. Manchester Centre for Genomic Medicine, Division of Evolution and Genomic Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
4. St Mary’s Hospital, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
5. Chief Medical Officer of State Mental Health Facilities, Office of Substance Abuse and Mental Health Florida Department of Children and Families, Tallahassee, FL, USA
6. HD Reach, Raleigh, NC, USA
7. Huntington’s Disease Drug Works, Seattle, WA, USA
8. Consultant for CNS drug development, Professor emeritus University of Pittsburgh, Pittsburgh, PA, USA
9. Westmead Huntington Disease Service, The University of Sydney, and the Garvan Institute of Medical Research, Sydney, Australia
10. Department of Neuropsychiatry, Charité - Universitätsmedizin, Berlin, Germany and University of Edinburgh and UK DRI, Edinburgh, UK