Thomas, D B Invasive cervical cancer and depot-medroxyprogesterone acetate. WHO Collaborative Study of Neoplasia and Steroid Contraceptives. [electronic resource] - Bulletin of the World Health Organization 1985 - 505-11 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0042-9686 Subjects--Topical Terms: Contraceptive Agents, Female--adverse effectsDelayed-Action PreparationsFemaleHumansMedroxyprogesterone--adverse effectsMedroxyprogesterone AcetateMexicoRiskThailandUterine Cervical Neoplasms--chemically induced