The birth rate, obstetricians, and primary medical care of women.
D000328:Adult; D001723:Birth Rate; D003191:Comprehensive Health Care; D005260:Female; D006176:Gynecology; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009774:Obstetrics; D011247:Pregnancy; D011248:Pregnancy Complications; D011320:Primary Health Care; D014481:United States