Women who met the inclusion criteria and signed the informed consent were eligible to participate. After enrollment, by a face to face interview of well-trained raters, information about pregnancy history, demographic and background data and dietary intake by food frequency questionnaire (FFQ) were collected. Participants were followed up until labor. Mothers who delivered at less than 37 weeks were assigned to the preterm group and theremained with delivery at GA equal to or greater than 37 weeks assigned to the term group.