[1] North East London NHS Fdn Trust, Goodmayes Hosp, Res & Dev Dept, Essex IG3 8XJ, England
[2] UCL, Div Psychiat, London W1T 7NF, England
[3] Queen Mary Univ London, Unit Social & Community Psychiat, London E1 4NS, England
[4] UCL, Inst Clin Trials & Methodol, London WC1N 6LJ, England
[5] UCL, Sch Pharm, London WC1N 1NC, England
[6] McPin Fdn, London SE1 4YR, England
[7] Univ Greenwich, Fac Educ Hlth & Human Sci, London SE10 9LS, England
[8] East London NHS Fdn Trust, Newham Ctr Mental Hlth, London E13 8SP, England
[9] UCL, Fac Med Sci, London, England
[10] Barnet Enfield Haringey Mental Hlth NHS Trust, London, England