Diaphragm failure.
D003274:Contraceptive Devices, Female / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D013089:Spermatocidal Agents / Q000494:pharmacology; D013094:Spermatozoa / Q000187:drug effects
D013089:Spermatocidal Agents