3Hofmeyr GJ, Mathai M, Shah A, et al. Techniques for caesarean section. Cochrane Database Syst Rev, 2008 Jan 23; ( 1 ) : CD004662.
4Hema KR ,Johanson R. Techniques for performing caesarean section [ J ]. Best Pract Res Clin Obstet Gynaecol, 2001,15 (1) :17- 47.
5Levy R, Chemomoretz T, Appelman Z, et al. Head pushing versus reverse breech extraction in cases of impacted fetal head during cesarean section [ J ]. Eur J Obstet Gynecol Reprod Biol, 2005,121 ( 1 ) :24-26.
6Bofill JA, Lencki SG, 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, 2000,17 (5) :265-269.
7Clark SL, Vines VL, Belfort MA. Fetal injury associated with routine vacuum use during cesarean delivery [ J ]. Am J Obstet Gynecol, 2008,198 (4) : e4.
8BOFILL 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.
9BADER 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.
