title: Vaginal rings for contraception: endocrine parameters.
authors.forename: S E
authors.initials: SE
authors.lastname: Olsson
mesh_terms: D001695:Biology; D003267:Contraception; D003268:Contraception Behavior; D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003274:Contraceptive Devices, Female; D003278:Contraceptives, Oral, Hormonal; D017135:Desogestrel; D004702:Endocrine Glands; D004703:Endocrine System; D004958:Estradiol; D004967:Estrogens; D004997:Ethinyl Estradiol; D005193:Family Planning Services; D006728:Hormones; D016912:Levonorgestrel; D017258:Medroxyprogesterone Acetate; D009640:Norethindrone; D010342:Patient Acceptance of Health Care; D010827:Physiology; D011374:Progesterone; D011372:Progestins
chemical_list: D003270:Contraceptive Agents; D003271:Contraceptive Agents, Female; D003278:Contraceptives, Oral, Hormonal; D004967:Estrogens; D006728:Hormones; D011372:Progestins; D004997:Ethinyl Estradiol; D011374:Progesterone; D004958:Estradiol; D016912:Levonorgestrel; D017135:Desogestrel; D017258:Medroxyprogesterone Acetate; D009640:Norethindrone
keywords: Biology; Contraception; Contraception Research; Contraceptive Agents; Contraceptive Agents, Estrogen; Contraceptive Agents, Female; Contraceptive Agents, Progestin; Contraceptive Methods; Contraceptive Usage; Desogestrel; Endocrine Effects; Endocrine System; Estradiol; Estrogens; Ethinyl Estradiol; Family Planning; Hormones; Levonorgestrel; Medroxyprogesterone Acetate; Method Acceptability; Norethindrone; Physiology; Progestational Hormones; Progesterone; Vaginal Rings