Folate deficiency and the pill.
D000328:Adult; D000748:Anemia, Macrocytic / Q000209:etiology*; D001706:Biopsy; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D005494:Folic Acid Deficiency / Q000139:chemically induced*; D006801:Humans; D007421:Intestine, Small / Q000473:pathology
D003276:Contraceptives, Oral