Nel, A., Malherbe, M., van Niekerk, N., Beksinska, M., Greener, R., Smit, J., . . . Walsh, T. (2020). Performance of Male Condoms When Used With and Without a Silicone Placebo Vaginal Ring—A Randomized, Crossover Trial. J Acquir Immune Defic Syndr.

Nel, Annalene, Mariëtte Malherbe, Neliëtte van Niekerk, Mags Beksinska, Ross Greener, Jennifer Smit, Ron Frezieres, a Terri Walsh. "Performance of Male Condoms When Used With and Without a Silicone Placebo Vaginal Ring—A Randomized, Crossover Trial." J Acquir Immune Defic Syndr 2020.

Nel, Annalene, et al. "Performance of Male Condoms When Used With and Without a Silicone Placebo Vaginal Ring—A Randomized, Crossover Trial." J Acquir Immune Defic Syndr 2020.