[1] Cardiff Univ, Sch Med, Dept Psychol Med, Cardiff CF14 4XN, S Glam, Wales
[2] Univ Oxford, Warneford Hosp, Oxford OX1 2JD, England
[3] Royal Edinburgh & Associated Hosp, Edinburgh, Midlothian, Scotland
[4] ABM Univ NHS Trust, Royal Cornhill Hosp, Aberdeen, Scotland
[5] Inst Psychiat, London, England
[6] Univ Newcastle, Inst Neurosci, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, England
[7] Univ Birmingham, Queen Elizabeth Psychiat Hosp, Dept Psychiat, Birmingham B15 2TT, W Midlands, England
[8] Univ Pittsburgh, Sch Med, Dept Psychiat, Pittsburgh, PA 15260 USA
[9] Univ Sheffield, Dept Acad Clin Psychiat, Sheffield S10 2TN, S Yorkshire, England
[10] Univ British Columbia, Dept Psychiat, Vancouver, BC V5Z 1M9, Canada