Low birth weight and perinatal mortality.
D001723:Birth Rate; D001724:Birth Weight; D005260:Female; D005313:Fetal Death; D006782:Hospitals, Special; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007234:Infant, Premature; D007348:Insurance, Health; D008427:Maternal Health Services; D011153:Population; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis; D011295:Prenatal Care; D012959:Socioeconomic Factors; D013548:Sweden; D014481:United States