1. Laboratory of Clinical Pharmacology and Therapeutics, Faculdade de Medicina Universidade de Lisboa Lisbon Portugal
2. Instituto de Medicina Molecular João Lobo Antunes Lisbon Portugal
3. CNS ‐ Campus Neurológico Torres Vedras Portugal
4. UCL Huntington's Disease Centre, UCL Queen Square Institute of Neurology University College London London United Kingdom
5. Centro de Estudos de Medicina Baseada na Evidência, Faculdade de Medicina Universidade de Lisboa Lisbon Portugal
6. Centro Hospitalar Universitário Lisboa Norte Lisbon Portugal
7. Parkinson disease and Movement Disorders Centre, Division of Neurology, Department of Medicine, The Ottawa Hospital Research Institute The University of Ottawa Brain and Mind Research Institute Ottawa Ontario Canada
8. National Centre of Reference for Huntington's Disease, Neurology Department Henri Mondor Hospital, Assistance Publique‐Hôpitaux de Paris Créteil France
9. Neuropsychologie Interventionelle Lab INSERM U955 E01B, PSL University Paris France
10. Université Paris Est Créteil Créteil France
11. Istituto di Neurologia Università Cattolica del Sacro Cuore Rome Italy
12. Movement Disorder Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy
13. Swiss Huntington Center, Neurozentrum Siloah AG Muri bei Bern Switzerland
14. Department of Neurology University of Bern Bern Switzerland
15. Movement Disorders Unit, Neurology Service Internal Medicine Department of the Federal University of Minas Gerais Belo Horizonte Brazil
16. Department of Neurology, Division of Behavioral and Cognitive Neurology Vanderbilt University Medical Center Nashville Tennessee USA
17. Department of Neurology University of Ulm Ulm Germany
18. Movement Disorders Unit, Neurology Department Hospital de la Santa Creu i Sant Pau Barcelona Spain
19. Institut d'Investigacions Biomèdiques Sant Pau (IIB‐Sant Pau) Universitat Autònoma de Barcelona (UAB) Barcelona Spain
20. Centro de Investigación en Red Enfermedades Neurodegenerativas (CIBERNED) Madrid Spain
21. Department of Neurology Icahn School of Medicine at Mount Sinai New York New York USA
22. Neuroscience and Mental Health Research Institute (Brain Research And Intracranial Neurotherapeutics Unit) Cardiff United Kingdom
23. Department of Neurology and Center of Clinical Neuroscience, 1st Faculty of Medicine Charles University and General University Hospital in Prague Prague Czech Republic
24. Department of Neurology Medical University Innsbruck Innsbruck Austria
25. Division of Psychiatric‐Neurological Nursing, Faculty of Health Sciences Medical University of Gdansk Gdansk Poland
26. Neurology and Stroke Department St. Adalbert Hospital Gdansk Poland
27. Department of Neurology University of Texas Health Science Center at Houston, McGovern Medical School Houston Texas USA
28. Department of Neurodegenerative Disease, Queen Square Institute of Neurology University College London London United Kingdom
29. UK Dementia Research Institute University College London London United Kingdom
30. Division of Neuromuscular Disorders, Department of Neurology Wake Forest School of Medicine Winston‐Salem North Carolina USA
31. Department of Neurology University Hospitals Leuven Leuven Belgium
32. Department of Neurosciences KU Leuven Leuven Belgium
33. CHDI Management/CHDI Foundation Princeton New Jersey USA