Letter: The probability of conception after discontinuance of oral contraception: a note on "Oral contraception, coital frequency, and the time required to conceive," by Westoff, Bumpass, and Ryder.
D003075:Coitus; D003276:Contraceptives, Oral; D005260:Female; D005306:Fertilization; D006801:Humans; D011247:Pregnancy; D011336:Probability; D013997:Time Factors
D003276:Contraceptives, Oral