作者单位:Univ Southampton, MRC Lifecourse Epidemiol Unit, Southampton, Hants, England[1]Inst Rech Sci Sante, Clin Res Unit Nanoro, Nanoro, Burkina Faso[2]Univ Southampton, Fac Med, Human Dev & Hlth, Southampton, Hants, England[3]Univ Southampton, Fac Med, Sch Human Dev & Hlth, Southampton, Hants, England[4]