Access to prenatal care: key to preventing low birthweight.
D005260:Female; D006297:Health Services Accessibility; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008427:Maternal Health Services; D009747:Nutritional Physiological Phenomena; D010353:Patient Education as Topic; D011247:Pregnancy; D011295:Prenatal Care; D012306:Risk; D014481:United States