Quality and cost.
D005260:Female; D006748:Hospital Departments / Q000592:standards*; D006766:Hospitals, County; D006801:Humans; D009775:Obstetrics and Gynecology Department, Hospital / Q000592:standards*; D011247:Pregnancy; D011295:Prenatal Care / Q000191:economics / Q000592:standards*; D012423:Rural Health; D014481:United States