Identifying the sources of the recent decline in perinatal mortality rates in California: two commentaries and a reply.
D002140:California; D002585:Cesarean Section; D036861:Delivery, Obstetric; D005260:Female; D005313:Fetal Death; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D011247:Pregnancy