Progress report on a study of the cervical cap.
D000328:Adult; D003258:Consumer Behavior; D003274:Contraceptive Devices, Female / Q000009:adverse effects; D005260:Female; D006801:Humans; D011247:Pregnancy; D013089:Spermatocidal Agents; D013997:Time Factors
D013089:Spermatocidal Agents