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The combined oral contraceptive pill (OCP) was first used in 1956 in Puerto Rico and is frequently referred to as ‘the Pill’. It is a combination of oral oestrogen and a progestin (progestogen) taken for contraception by over 100 million women worldwide. The OCPs were perceived as a convenient, effective and reversible means of contraception. Ever since OCPs were first introduced, their relative safety has been the focus of much debate.1 Concerns are derived from the influences that these hormone-based therapies are used upon a …
Competing interests None.