1. Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City2Department of Biostatistics, Carver College of Medicine, University of Iowa, Iowa City
2. Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City
3. Centre for Molecular Medicine and Therapeutics, Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
4. Department of Genetics and Cytogenetics, and INSERM UMR S679, Institut du Cerveau et de la Moelle Epinière, Hôpital de la Salpêtrière, Paris, France
5. Department of Neurology, Leiden University Medical Centre, Leiden, Netherlands
6. School of Psychology and Psychiatry, Monash University, Melbourne, Victoria, Australia
7. Department of Neurology, University of Münster, Münster, Germany
8. Cure Huntington’s Disease Initiative Foundation, Department of Neurology, University of Ulm, Ulm, Germany
9. Huntington’s Disease Research Centre, Institute of Neurology, University College London, London, England
10. Institute of Neurology, University College London, London, England
11. Huntington's Disease Centre, Department of Neurodegenerative Disease, Institute of Neurology, University College London, Queen Square, London, England