From the Michael Trimble Neuropsychiatry Research Group, Dept. of Neuropsychiatry, BSMHFT (CME,AEC), School of Clinical and Experimental Medicine (CME), University of Birmingham, Birmingham, UK; Sobell Dept. of Motor Neuroscience and Movement Disorders, Institute of Neurology, UCL, London, UK (AEC); Section of Child Neuropsychiatry, Dept. of Pediatrics, & Dept. of Biomedical Sciences, University of Catania, Italy (MG,PC,RR); St. George’s Hospital Medical School, St. George’s Hospital, London, UK (MMR); Dept. of Mental Health Sciences, UCL, London, UK (MMR).