1. Academic Department of Rehabilitation Medicine, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, UK
2. Departments of Psychiatry, Pediatrics and Neurology, University of Iowa Carver College of Medicine, Iowa City, IA, USA
3. Struthers Parkinson’s Center, Minneapolis, MN, USA
4. Department of Neurology, University of Ulm, Ulm, Germany
5. Department of Clinical Neuroscience, John Van Geest Centre for Brain Repair, Forvie Site, Robinson Way, Cambridge, UK
6. Huntington and Rare Diseases Unit, IRCCS Casa Sollievo della Sofferenza Hospital (Rome-CSS Mendel), San Giovanni Rotondo, Italy
7. Neurozentrum Siloah and Department of Neurology, Swiss HD Center, University of Bern, Switzerland
8. Department of Clinical Genetics, Sheffield Children’s Hospital, Sheffield, UK