Present methods and future possibilities.
D002648:Child; D003270:Contraceptive Agents; D003273:Contraceptive Devices; D005193:Family Planning Services; D005260:Female; D006801:Humans; D008297:Male; D011155:Population Control; D011247:Pregnancy; D012106:Research; D012926:Social Control, Formal
D003270:Contraceptive Agents