[1] KENYA GOVT MED RES CTR,CRC KILIFI UNIT,KILIFI,KENYA
[2] ABERDEEN MATERN HOSP,DEPT OBSTET & GYNAECOL,DUGALD BAIRD CTR RES WOMENS HLTH,ABERDEEN AB9 2ZD,SCOTLAND
[3] UNIV OXFORD,JOHN RADCLIFFE HOSP,INST MOL MED,OXFORD OX3 9DU,ENGLAND
[4] KILIFI DIST HOSP,KILIFI,KENYA