title: Concerns regarding design, analysis, and interpretation of the morrison study on hormonal contraceptive use and acquisition of cervical infections.
authors.forename: Pamela
authors.initials: P
authors.lastname: Warner
mesh_terms: D015986:Confounding Factors, Epidemiologic; D003271:Contraceptive Agents, Female; D003692:Delayed-Action Preparations; D016021:Epidemiologic Studies; D005260:Female; D006801:Humans; D017258:Medroxyprogesterone Acetate; D012107:Research Design; D012749:Sexually Transmitted Diseases / Q000209:etiology*; D002577:Uterine Cervical Diseases / Q000209:etiology*
chemical_list: D003271:Contraceptive Agents, Female; D003692:Delayed-Action Preparations; D017258:Medroxyprogesterone Acetate