World Health Organisation multicentre randomised trial of supplementation with vitamins C and E among pregnant women at high risk for pre-eclampsia in populations of low nutritiona... by Villar, J, Purwar, M, Merialdi, M, Zavaleta, N, Thi Nhu Ngoc, N, Anthony, J, De Greeff, A, Poston, L, Shennan, A