1MRC Centre for Neuropsychiatric Genetics and Genomics, Department of Neurology, School of Medicine, Cardiff University, Cardiff, United Kingdom
2Department of Neurology, School of Medicine, Cardiff University, Cardiff, United Kingdom
3Department of Neurology, Barking, Havering & Redbridge University Hospitals NHS Trust, United Kingdom
4Institute of Genetic Medicine, Newcastle University, Central Parkway, Newcastle upon Tyne, United Kingdom
5Sandwell and West Birmingham Hospitals NHS Trust, United Kingdom
6School of Clinical and Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
7Department of Neurology, St. George’s Hospital, London, United Kingdom
8Department of Molecular Neuroscience, Institute of Neurology, University College London, London, United Kingdom
9University Hospitals Birmingham NHS Trust, Birmingham, United Kingdom
10City Hospital, Birmingham, United Kingdom
11Department of Clinical Neurosciences, University of Cambridge, Addenbrooke's, Hospital, Hills Road, Cambridge, United Kingdom
12Department of Neurology, Worthing Hospital, Worthing, United Kingdom
13School of Social and Community Medicine, Bristol University, Bristol, United Kingdom