title: Contraception: barriers and spermicides, periodic abstinence, and intrauterine devices.
authors: National University Hosital, University of Singapore.
authors: M
authors: M
authors: Yang
authors: R N
authors: RN
authors: Prasad
authors: S S
authors: SS
authors: Ratnam
mesh_terms: D003273:Contraceptive Devices; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D008297:Male; D012252:Natural Family Planning Methods; D000292:Pelvic Inflammatory Disease / Q000209:etiology; D011247:Pregnancy; D012749:Sexually Transmitted Diseases / Q000517:prevention & control; D013089:Spermatocidal Agents; D002583:Uterine Cervical Neoplasms / Q000517:prevention & control
chemical_list: D013089:Spermatocidal Agents