1. Natural conception in HIV-negative women with HIV-infected partners;Mandelbrot;Lancet,1997
2. A longitudinal study of human immunodeficiency virus transmission by heterosexual partners;N Engl J Med,1994
3. Man to woman sexual transmission of HIV: a longitudinal study of 343 steady partners of infected men;J Acquir Immune Defic Syndr,1993
4. A cluster of HIV infection among heterosexual people without apparent risk factors;Clumeck;N Engl J Med,1989
5. Semprini AE, Fiore S, Savasi V, et al. Assisted conception to reduce the risk of male-to-female sexual transfer of HIV in serodiscordant couples: an update. Annual Meeting of the American Society for Reproductive Medicine, Boston, November 1996 (abstr).