1. Department of Neurology; Ulm University Hospital; Ulm Germany
2. Wellcome Trust Centre for Neuroimaging; University College London; London United Kingdom
3. HD Research Group; UCL Institute of Neurology; Queen Square London United Kingdom
4. Sobell Department of Motor Neuroscience and Movement Disorders; University College London Institute of Neurology; Queen Square London United Kingdom
5. Department of Psychiatry and Psychotherapy, Freiburg Brain Imaging; University Medical Center, Albert-Ludwigs-University Freiburg; Freiburg Germany
6. Department of Neurology, Freiburg Brain Imaging; University Medical Center, Albert-Ludwigs-University Freiburg; Freiburg Germany
7. Developmental Imaging and Biophysics Section; UCL Institute of Child Health; London United Kingdom
8. Centre for Brain Health; University of British Columbia; Vancouver Canada
9. CHDI Foundation Inc; Princeton New Jersey
10. George-Huntington-Institute, Technology-Park Muenster; Muenster Germany
11. Center for Molecular Medicine and Therapeutics and Department of Medical Genetics; Child and Family Research Institute, University of British Columbia; Vancouver Canada
12. Department of Neurology; Leiden University Medical Centre; Leiden Netherlands
13. APHP Department of Genetics; Groupe Hospitalier Pitié-Salpêtrière, and Institut Du Cerveau Et De La Moelle, INSERM U1127, CNRS UMR7225, UPMC Université Paris VI UMR_S1127; Paris France
14. Departments of Psychiatry and Biostatistics; University of Iowa; Iowa City Iowa
15. Department of Neurodegenerative Disease; University College London, Institute of Neurology; Queen Square London United Kingdom