1. Huntington's Disease Research Group; Institute of Psychological Medicine and Clinical Neurosciences; Cardiff UK
2. Faculty of Medical Science; University of Groningen; Groningen The Netherlands
3. MRC Centre for Neuropsychiatric Genetics and Genomics; Cardiff UK
4. Department of Neurology; University Medical Centre of Groningen; Groningen The Netherlands
5. Cardiff and Vale University Health Board; University Hospital of Wales; Cardiff
6. Wales Brain Repair and Intracranial Neurotherapeutics Unit (BRAIN); Cardiff University; Cardiff
7. Cardiff University Brain Repair Group; School of Biosciences; Cardiff UK