fetal lactate levels were also significantly higher than maternal levels in vigorous newborns ( p less than 0.01 ) , the lactate difference between umbilical artery and maternal artery being lowest with elective cesarean section , higher with cesarean section performed during labor , and highest with vaginal delivery ( p less than 0.02 , tab . ii ) .
C0473296
elective cesarean section
C0007876
cesarean section