[1] Univ W Indies, Res Inst Trop Med, Mona, Jamaica
[2] Univ W Indies, Dept Surg Radiol Anaesthesia & Intens Care, Mona, Jamaica
[3] Univ Ghent, Inst Biomed Technol, Ghent, Belgium
[4] Univ W Indies, Dept Med, Kingston, Jamaica
[5] Univ Southampton, MRC Lifecourse Epidemiol Unit, Southampton SO9 5NH, Hants, England
[6] Univ Southampton, Sch Med, DOHaD Div, Southampton SO9 5NH, Hants, England
[7] Univ Auckland, Liggins Inst, UK Ctr Human Evolut Adaptat & Dis, Auckland 1, New Zealand
[8] Univ Manchester, Sch Epidemiol & Hlth Sci, Manchester M13 9PL, Lancs, England