Oral contraceptives--50 million users.
D000293:Adolescent; D000328:Adult; D000349:Africa; D001208:Asia; D002489:Central America; D002681:China; D003276:Contraceptives, Oral / Q000008:administration & dosage / Q000600:supply & distribution; D003906:Developing Countries; D004345:Drug Industry; D005193:Family Planning Services; D005260:Female; D006077:Government Agencies; D006801:Humans; D008800:Mexico; D013020:South America; D014481:United States; D014900:West Indies
D003276:Contraceptives, Oral