title: Serum folate and Vitamin B12 levels in women using modern oral contraceptives (OC) containing 20 microg ethinyl estradiol.
authors.forename: E
authors.initials: E
authors.lastname: Andrès
authors.forename: E
authors.initials: E
authors.lastname: Noel
mesh_terms: D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects*; D004997:Ethinyl Estradiol / Q000009:adverse effects*; D005260:Female; D005492:Folic Acid / Q000097:blood; D006801:Humans; D014805:Vitamin B 12 / Q000097:blood; D014806:Vitamin B 12 Deficiency / Q000209:etiology*
chemical_list: D003278:Contraceptives, Oral, Hormonal; D004997:Ethinyl Estradiol; D005492:Folic Acid; D014805:Vitamin B 12