[Cesarean section and perinatal mortality from 1950 to 1957].
D001699:Biometry; D002585:Cesarean Section / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D007226:Infant Mortality; D066087:Perinatal Death; D054238:Perinatal Mortality; D011247:Pregnancy
CESAREAN SECTION/statistics; INFANT MORTALITY