3 ms·Condomsby werber 7y agoCondomsjfk13 7y agoHow modern do you think they are? https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3649591/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3649591/werber 7y agowow, awesome source, thanks!