[1] Univ Leeds, Sch Food Sci & Nutr, Nutr Epidemiol Grp, Leeds LS2 9JT, W Yorkshire, England
[2] Imperial Coll London, London Sch Publ Hlth, Dept Primary Care & Publ Hlth, Global EHlth Unit, London, England
[3] Univ Leeds, Div Biostat, Leeds LS2 9JT, W Yorkshire, England
[4] Univ Leeds, Mol Epidemiol Unit, Leeds LS2 9JT, W Yorkshire, England
[5] Imperial Coll London, Hammersmith Hosp, Dept Investigat Med, Nutr & Dietet Res Grp, London, England