3Ho PC, Tsang SS, Ma HK. Reducing the induction to abortion interval in termination of second trimester comparison of mifepristone with laminaria tent[J]. Br J Obstet Gynecol, 1995,102(8) :648.
4Gottlieb C, Bygdeman M. The use of antiprogestin(RU486) for termination of second trimester pregnancy[ J ]. Aeta Obstet Gynecol Stand, 1991, 70(3) : 199.
5Wing DA. Labor induction with misoprostol [ J ]. Am J Obstet Gynecol, 1999,181:339.
6Arias F. Pharmacology of oxytocin and prostaglandins[ J ]. Clin Obstet Gynecol, 2000, 43:455.
7Rodger MW, Baird DT. Pretreatment with mifepristone(RU486) reduce interval between prostaglandin administration and expulsion in second trimester abortion[J]. Br J Obstet Gynecol, 1990, 97:41.
