[1] Univ Cambridge, Dev Psychiat Sect, Douglas House,18b Trumpington Rd, Cambridge CB2 8AH, England
[2] UCL, Anna Freud Ctr, London, England
[3] Kings Coll London, Ctr Econ Mental & Phys Hlth, London, England
[4] Univ Manchester, Inst Brain & Behav & Mental Hlth, Manchester, Lancs, England
[5] Univ East Anglia, Sch Med, Norwich, Norfolk, England
[6] Univ Manchester, Inst Populat Hlth, Biostat Grp, Manchester, Lancs, England
[7] Tavistock & Portman NHS Fdn Trust, Tavistock Ctr, London, England
[8] UCL, Res Dept Clin Educ & Hlth Psychol, London, England
[9] Cambridgeshire & Peterborough NHS Fdn Trust, Cambridge, England
[10] Lancashire Care Fdn Trust, Preston, Lancs, England