[1] Univ Manchester, Div Neurosci & Expt Psychol, Manchester, Lancs, England
[2] Salford Royal NHS Fdn Trust, NIHR CLAHRC Greater Manchester, Manchester, Lancs, England
[3] Univ Manchester, Biostat, Manchester, Lancs, England
[4] Univ Manchester, Sch Hlth Sci, Manchester, Lancs, England
[5] Univ Manchester, Div Nursing Midwifery & Social Work, Manchester, Lancs, England
[6] Univ Cambridge, Ctr Family Res, Cambridge, England