[1] UCL, Elizabeth Garrett Anderson Inst Womens Hlth, 74 Huntley St, London WC1E 6AU, England
[2] UCL, Dept Econ, London, England
[3] UCL, Dept Social Sci, London, England
[4] UCL, UCL Inst Global Hlth, Global Hlth Epidemiol & Evaluat, London, England
[5] Univ Southampton, MRC Lifecourse Epidemiol Unit, Southampton, NY USA
[6] Univ Southampton, Inst Dev Sci, Southampton, NY USA
[7] Univ Leeds, Sch Food Sci & Nutr, Nutr Epidemiol Grp, Leeds, W Yorkshire, England
[8] Publ Hlth England, London, England
[9] Univ Southampton, Southampton Educ Sch, Southampton, Hants, England
[10] Univ Hosp Southampton, NIHR Southampton Biomed Res Ctr, Southampton, Hants, England
[11] Univ Oxford, Nuffield Dept Primary Hlth Care Sci, Oxford, England
[12] Royal Coll Gen Practitioners, London, England
[13] St Thomas Hosp, Kings Coll London, Fac Life Sci & Med, Sch Life Course Sci, London, England
[14] Univ Southampton, Univ Hosp Southampton, NIHR Southampton, Biomed Res Ctr,MRC Lifecourse Epidemiol Unit, Southampton, Hants, England