Barrier methods of contraception: they can be highly effective.
D003267:Contraception / Q000379:methods*; D003271:Contraceptive Agents, Female; D003274:Contraceptive Devices, Female; D003275:Contraceptive Devices, Male; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D013089:Spermatocidal Agents
D003271:Contraceptive Agents, Female; D013089:Spermatocidal Agents