[1] Univ Bristol, Sch Psychol Sci, 12a Priory Rd, Bristol BS8 1TU, Avon, England
[2] Univ Cambridge, Behav & Hlth Res Unit, Cambridge CB2 0SR, England
[3] Univ Cambridge, Cambridgeshire & Peterborough NHS Fdn Trust, Dept Psychiat, Douglas House, Cambridge CB2 8AH, England
[4] Univ Cambridge, Wellcome MRC Inst Metab Sci Res Labs IMS MRL, Cambridge CB2 0QQ, England
[5] Univ Bristol Sch Med, Populat Hlth Sci, Canynge Hall,39 Whatley Rd, Bristol BS8 2PS, Avon, England
[6] Univ Bristol, MRC Integrat Epidemiol Unit IEU, Oakfield House Oakfield Grove, Bristol BS8 2BN, Avon, England