1. Division of Neuropsychiatry and Behavioral Neurology; Rhode Island Hospital; Providence Rhode Island U.S.A
2. Departments of Psychiatry and Neurology (Research); Alpert Medical School of Brown University; Providence Rhode Island U.S.A
3. Walton Centre for Neurology and Neurosurgery; University Department of Neurosciences; University of Liverpool; Liverpool Merseyside United Kingdom
4. Department of Neurology; Christchurch Hospital; Christchurch New Zealand
5. Department of Psychology; King's College London; Institute of Psychiatry; London United Kingdom
6. Academic Neurology Unit; University of Sheffield; Royal Hallamshire Hospital; Sheffield United Kingdom