Kestelman P, Trussell J. Efficacy of the simultaneous use of condoms and spermicides. Fam Plann Perspect. 1991, 23 (5): 226–7, 232. JSTOR 2135759. PMID 1743276. doi:10.2307/2135759.
jstor.org
Kestelman P, Trussell J. Efficacy of the simultaneous use of condoms and spermicides. Fam Plann Perspect. 1991, 23 (5): 226–7, 232. JSTOR 2135759. PMID 1743276. doi:10.2307/2135759.
nih.gov
ncbi.nlm.nih.gov
Kestelman P, Trussell J. Efficacy of the simultaneous use of condoms and spermicides. Fam Plann Perspect. 1991, 23 (5): 226–7, 232. JSTOR 2135759. PMID 1743276. doi:10.2307/2135759.