pra after cesarean section without labor , 15.2 +/- 2.3 ng/ml/hr ( mean and sem ) , was less than after cesarean section with labor , 44.1 +/- 8.9 ( p less than .02 ) , and vaginal delivery , 34.7 +/- 4.3 ( p less than .05 ) .
C0022864
labor
C3813276
after