Data came from the MINIMat study ( Maternal and Infant Nutrition Interventions , Matlab ) , a randomized trial of prenatal food supplementation ( invitation early , about 9 weeks [ E ] , or at usual time , about 20 weeks [ U ] of pregnancy ) and 30mg or 60mg iron with 400 gm folic acid , or multiple micronutrients ( Fe30F , Fe60F , MMS ) resulting in six randomization groups , EFe30F , UFe30F , EFe60F , UFe60F , EMMS , and UMMS ( n = 4436 ) .