[1] UCL Inst Neurol, London, England
[2] Univ Manchester, Manchester, Lancs, England
[3] Univ Cambridge, Cambridge, England
[4] Kings Coll London, Inst Psychiat Psychol & Neurosci, London, England
[5] Univ Edinburgh, Edinburgh, Midlothian, Scotland
[6] Univ Birmingham, Birmingham, W Midlands, England