Folic acid deficiency.
D000293:Adolescent; D000756:Anemia, Sideroblastic / Q000209:etiology; D004032:Diet; D005260:Female; D005494:Folic Acid Deficiency / Q000150:complications / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D011247:Pregnancy; D011250:Pregnancy Complications, Hematologic / Q000209:etiology; D011295:Prenatal Care; D011644:Puerperal Disorders / Q000175:diagnosis*