6American College of Obstetricians and Gynecologists.Vaginal birth after previous cesarean delivery.ACOG Practice Bulletin No.54[J].Obetst Gynecol,2004,104(1):203-212.
5B-Lynch C,Keith LG,Lalondc AB,et al.A textbook of Post partmn hemorrhage[M]. Dum friesshire: Sapiens Publishing,2006,263-276.
6Wedisinghe L,MacleodM, Murphy DJ.Use of oxytocin to prevent hacmorrhage at caesarean section -A survey of practice in the United Kingdom[J ].Eur J Obslet Gynecol Rep rod Biol,2008:137( 1 ):27-30.