Stone, Rebecca H,; Rafie, Sally; El-Ibiary, Shareen Y.; Karaoui, Lamis R.; Shealy, Kayce M.; Vernon, Veronica P.
(2016-09-30)
Oral contraceptive pills (OCPs) containing estrogen and progestin or progestin only were introduced as a contraceptive option for women in 1960. Since their introduction to the market, there have been significant changes ...