1BOFILL J A, LENCKI S G, BARHAN S, et al. Instrumental delivery of the fetal head at the time of elective repeat cesarean: a randomized pilot study [ J ]. Am J Perinatol, 2007, 17 (5) : 234.
2BADER A M, DAITA S, ARTHUR G R, et al. Maternal and fetal eatecholamines and uterine incision -to -delivery interval during elective cesarean section[J]. Obstet Gynecol, 1990, 75: 600.
