title: Trials point to effectiveness of new vaginal ring.
mesh_terms: D003267:Contraception; D003274:Contraceptive Devices, Female; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D008389:Marketing of Health Services; D018873:Pregnancy Rate
keywords: Contraception; Contraceptive Methods; Family Planning; Marketing; Pregnancy Rate; Use-effectiveness; Vaginal Rings