Martínez de Villarreal, Laura E Weekly administration of folic acid and epidemiology of neural tube defects. [electronic resource] - Maternal and child health journal Sep 2006 - 397-401 p. digital Publication Type: Comparative Study; Journal Article ISSN: 1092-7875 Standard No.: 10.1007/s10995-006-0082-2 doi Subjects--Topical Terms: Anencephaly--epidemiologyEncephalocele--epidemiologyFemaleFolic Acid--administration & dosageHealth PromotionHumansInfant, NewbornMaleMaternal WelfareMexico--epidemiologyNeural Tube Defects--epidemiologyPublic HealthSpinal Dysraphism--epidemiologyVitamin B Complex--administration & dosage