[1] UCL, Dept Behav Sci & Hlth, London, England
[2] UCL, Dept Epidemiol & Publ Hlth, London, England
[3] IMIM Hosp Mar Med Res Inst, Cardiovasc Risk & Nutr Grp, Barcelona, Catalonia, Spain
[4] Oregon State Univ, Sch Biol & Populat Hlth Sci, Corvallis, OR 97331 USA