[1] Univ Surrey, Fac Hlth & Med Sci, Sch Hlth Sci, Guildford, Surrey, England
[2] Univ Birmingham, Sch Social Policy, Dept Social Work & Social Policy, Birmingham, W Midlands, England
[3] UCL, Res Dept Primary Care & Populat Hlth, Med Sch, London, England
[4] Keele Univ, Sch Med, Keele, Staffs, England
[5] Bradford Teaching Hosp NHS Fdn Trust, Bradford Inst Hlth Res, Yorkshire Qual & Safety Res Grp, Bradford, W Yorkshire, England
[6] Univ Leeds, Fac Med & Hlth, Leeds Inst Hlth Sci, Leeds, W Yorkshire, England
[7] Univ Exeter, Exeter EX4 4PY, Devon, England
[8] Birkbeck Univ London, Dept Org Psychol, London, England
[9] Univ Manchester, Sch Med, Div Psychol & Mental Hlth, Manchester, Lancs, England
[10] Univ Birmingham, Inst Appl Hlth Res, Birmingham, W Midlands, England