Analysis of oral contraceptive use through multiple decrement life table techniques.
D003276:Contraceptives, Oral / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D008722:Methods; D009864:Ontario; D011247:Pregnancy; D012189:Retrospective Studies; D012494:Sampling Studies; D013223:Statistics as Topic
D003276:Contraceptives, Oral