3Glasier A. Emergency contraception : timeforde-regulation?Br J Obster Gynaecol,1993,100:611.
4Yuzpe AA,Smith RP,Rademaker AW. A multicentre clinical in vestigation emplying ethinylestradiol conbined with dl-norgestrel as a postcoital contraceptive agaent. Fertil Steril,1982,37:508.
5Glasier A,Thong KJ ,Dewar M ,et al. Mifepratone (RU486)compared with high-does estrogen and progestogen for emergency postcoital contraception. New Engl J Med,1992,327:1041.
6Webb AM ,Russell J ,Elstein M. Comparison of Yuzpe regimen danazol and mifepristone (RU486)in oral posteoital contraception. Br Med J, 1992,305 : 927.
7Yuzpe AA,Lancee WJ. EE and dl-norgestrel as a postoital contraceptive. Fertil Steril, 1977,28: 932.
8Ho PC, Kwan MS. A prospective randomized comparision of levonogrestrel with the Yuzpe regimen in postcoital contraception. Hum Reprod, 1993,8 : 389.
9Rarsay S. Effective methods of emergency contraception.Lancet. 1995,345 : 1169.
