Han, Young A Development of vaginal rings for sustained release of nonhormonal contraceptives and anti-HIV agents. [electronic resource] - Contraception Aug 2007 - 132-8 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0010-7824 Standard No.: 10.1016/j.contraception.2007.04.006 doi Subjects--Topical Terms: Anti-HIV Agents--administration & dosageAscorbic Acid--administration & dosageCervix Mucus--drug effectsContraceptive Agents, Female--administration & dosageContraceptive Devices, FemaleDrug Delivery SystemsFemaleFerrous Compounds--administration & dosageGum ArabicHumansHydrogen-Ion ConcentrationMaleMethacrylatesSpermatozoa--drug effectsZidovudine--administration & dosage