1. Institute of Neuroscience and Psychology University of Glasgow Glasgow United Kingdom
2. Department of Neurology Ipswich Hospital NHS Trust Ipswich United Kingdom
3. School of Medicine, Dentistry and Nursing University of Glasgow Glasgow United Kingdom
4. Department of Clinical Genetics Queen Elizabeth University Hospital Glasgow United Kingdom
5. Department of Neurology Institute of Neurological Sciences, Queen Elizabeth University Hospital Glasgow United Kingdom
6. Department of Medicine Imperial College London London United Kingdom