共 50 条
- [44] Folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study BMC PREGNANCY AND CHILDBIRTH, 2014, 14
- [46] Folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study BMC Pregnancy and Childbirth, 14