3North BB.Vaginal contraceptives.Effective protection from sexually transmitted diseases for women? J Reprod Med,1988,33:307-311.
4Sangi-Haghpeykar H,Poindexter AN 3rd,Levine H.Sperm transport and survival post-application of a new spermicide contraceptive.Advantage 24 Study Group.Contraception,1996,53:353-356.
5Medez F,Castro A,Ortega A.Use effectiveness of a spermicidal suppository containing benzalkonium chloride.Contraception,1986,34:353-362.
6Chantler E,Fisher H,Solanki S,et al.Quantification of the in vitro activity of some compounds with spermicidal activity.Contraception,1992,46:527-536.
