The effectiveness of postcoital hormonal contraception.
Trussell
J
J
Woodrow Wilson School of Public and International Affairs, Princeton University, N.J.
Stewart
F
F
D003281:Contraceptives, Postcoital; D005260:Female; D005306:Fertilization; D006801:Humans; D011247:Pregnancy / Q000706:statistics & numerical data*; D017211:Treatment Failure; D016896:Treatment Outcome
D003281:Contraceptives, Postcoital