title: [Clarification concerning NuvaRing].
authors.forename: Mats
authors.initials: M
authors.lastname: Jonsson
mesh_terms: D003271:Contraceptive Agents, Female / Q000008:administration & dosage / Q000009:adverse effects*; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage / Q000009:adverse effects*; D000075202:Contraindications; D017135:Desogestrel / Q000008:administration & dosage / Q000009:adverse effects; D004346:Drug Information Services; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000009:adverse effects; D005260:Female; D006801:Humans; D012307:Risk Factors; D020246:Venous Thrombosis / Q000139:chemically induced*
chemical_list: D003271:Contraceptive Agents, Female; D003277:Contraceptives, Oral, Combined; D004997:Ethinyl Estradiol; D017135:Desogestrel