Contraception: barriers and spermicides, periodic abstinence, and intrauterine devices.
Yang
M
M
National University Hosital, University of Singapore.
Prasad
R N
RN
Ratnam
S S
SS
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
D013089:Spermatocidal Agents