Study Participants
congenital abnormality
RECRUITMENT
Mother-child dyads were eligible to participate if the child was aged 11–12 months (i.e., 11 months and 1 day to 12 months and 29 days) and the mother provided written informed consent. Children with a history of congenital abnormality or mothers intending to move out of the area during the study period were excluded from the trial. Mother-child dyads visiting these health facilities for any reason were enrolled sequentially, and recruitment was stopped when the required number of registrations in the respective trial arm was achieved. All enrolled mother-child dyads were followed up until 1 year.