The IUD and the pill: extended use-effectiveness.
D000328:Adult; D000367:Age Factors; D003267:Contraception / Q000706:statistics & numerical data*; D003276:Contraceptives, Oral / Q000592:standards; D005193:Family Planning Services; D005260:Female; D005845:Georgia; D006801:Humans; D007434:Intrauterine Devices / Q000592:standards / Q000706:statistics & numerical data*; D009518:New York; D011247:Pregnancy; D013997:Time Factors
D003276:Contraceptives, Oral