title: Vaginal contraceptive rings: option for the new millennium.
mesh_terms: D003267:Contraception; D003274:Contraceptive Devices, Female; D004467:Economics; D005193:Family Planning Services; D012106:Research; D013672:Technology
keywords: Contraception; Contraception Research; Contraceptive Methods; Economic Factors; Family Planning; Research And Development; Technology; Vaginal Rings