title: [Primary prevention of neural tube defects: folic acid or levofoline acid?].
authors.forename: María Luisa
authors.initials: ML
authors.lastname: Martínez-Frías
authors.forename: Elvira
authors.initials: E
authors.lastname: Rodríguez-Pinilla
authors.forename: Consuelo
authors.initials: C
authors.lastname: Mejías
authors.forename: Griselda
authors.initials: G
authors.lastname: Dequino
mesh_terms: D005315:Fetal Diseases / Q000517:prevention & control*; D005492:Folic Acid / Q000627:therapeutic use*; D006801:Humans; D002955:Leucovorin / Q000627:therapeutic use; D009436:Neural Tube Defects / Q000517:prevention & control*
chemical_list: D005492:Folic Acid; D002955:Leucovorin