Letter: Oral contraceptives, serum folate, and hematologic status.
D003276:Contraceptives, Oral / Q000009:adverse effects*; D003864:Depression, Chemical; D005260:Female; D005492:Folic Acid / Q000097:blood*; D006801:Humans
D003276:Contraceptives, Oral; D005492:Folic Acid