[1] Univ Manchester, Dept Psychiat, Neurosci & Psychiat Unit, Manchester M13 9PT, Lancs, England
[2] Newcastle Univ, Royal Victoria Infirm, Sch Neurol Neurobiol & Psychiat, Newcastle Upon Tyne NE1 4LP, Tyne & Wear, England
[3] Manchester Royal Infirm, Manchester Mental Hlth & Social Care Trust, Manchester, Lancs, England
[4] Warneford Hosp, Univ Dept Psychiat, Psychopharmacol Res Unit, Oxford OX3 7JX, England
[5] Kings Coll London, Hlth Serv, Sect Community Mental Hlth, London WC2R 2LS, England
[6] Kings Coll London, Populat Res Dept, Inst Psychiat, London WC2R 2LS, England
[7] Acad Unit Psychiat, Bristol, Avon, England
[8] Univ Dundee, Ninewells Hosp & Med Sch, Sect Psychiat & Behav Sci, Div Pathol & Neurosci, Dundee DD1 9SY, Scotland
[9] Newcastle Univ, Royal Victoria Infirm, Inst Neurosci, Newcastle Upon Tyne NE1 4LP, Tyne & Wear, England
[10] Univ Southampton, Royal S Hants Hosp, Southampton, Hants, England
[11] Kings Coll London, NIHR Biomed Res Ctr, London WC2R 2LS, England
[12] Kings Coll London, Hlth Serv, London WC2R 2LS, England
[13] Kings Coll London, Populat Res Dept, Inst Psychiat, London WC2R 2LS, England