Sapire, K E Oral contraceptives and the risk of cancer. [electronic resource] - South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde Dec 1983 - 964-5 p. digital Publication Type: Editorial ISSN: 0256-9574 Subjects--Topical Terms: Breast Neoplasms--chemically inducedContraceptives, Oral--adverse effectsFemaleHumansRiskUterine Cervical Neoplasms--chemically induced