title: Contraceptives and dysplasia: higher rate for pill choosers.
abstract: Among women choosing the pill in preference to other contraceptive methods there is a higher rate of the cancer precursor, dysplasia of the cervix, before any possible effect of the pill.
authors.forename: E
authors.initials: E
authors.lastname: Stern
authors.forename: V A
authors.initials: VA
authors.lastname: Clark
authors.forename: C F
authors.initials: CF
authors.lastname: Coffelt