title: Hematological studies on iron- and folate-requirements in pregnancy.
mesh_terms: D004906:Erythrocyte Count; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage* / Q000097:blood; D006400:Hematocrit; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007501:Iron / Q000008:administration & dosage* / Q000097:blood; D009751:Nutritional Requirements; D011247:Pregnancy; D014805:Vitamin B 12 / Q000097:blood
chemical_list: D006454:Hemoglobins; D005492:Folic Acid; D007501:Iron; D014805:Vitamin B 12