Improving obstetric care in northeast Brazil.
D001938:Brazil; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D008427:Maternal Health Services / Q000458:organization & administration*; D008880:Midwifery; D010865:Pilot Projects; D011247:Pregnancy; D011295:Prenatal Care; D012017:Referral and Consultation; D012423:Rural Health