5Hamoda H, Ashok PW, Flett GM, et al. A randomized trial of mifepristone in combination with misoprostol administered sublingually or vaginally for medical abortion at 13-20 weeks gestation. Hum Reprod, 2005,20 (8) :2348-2354.
6Stubblefield PG, Carr-Ellis S,Borgatta L. Methods for induced abortion. Obstet Gynecol,2004,104(1) : 174-185.
7Bagga R, Chaudhary N, Kalra J. Rupture in an unscarred uterus during second trimester pregnancy termination with mifepristone and misoprostol. Int J Gynaecol Obstet, 2004,87 ( 1 ) :42-43.
3World Health Organization. Termination of pregnancy with reduced doses of mifepfistone. World Health Organisation Task Force on Post-ovulatory Methods of Fertility Regulation. BMJ, 1993, 307 (6903) :532-537.
4Skafar DF. Differences in the bindling mechanism of RU486 and progesterone to the progesterone receptor. Biochemistry, 1991,30 (45) :10829-10832.