Sponge survives first year; emerges top seller.
D000569:Americas; D003132:Commerce; D003267:Contraception; D003274:Contraceptive Devices, Female; D019049:Developed Countries; D003906:Developing Countries; D004194:Disease; D005069:Evaluation Studies as Topic; D005193:Family Planning Services; D007239:Infections; D008389:Marketing of Health Services; D009656:North America; D012106:Research; D012107:Research Design; D014481:United States
Americas; Bacterial And Fungal Diseases; Barrier Methods--complications; Barrier Methods--cost; Commerce; Contraception; Contraceptive Effectiveness; Contraceptive Methods--complications; Contraceptive Methods--cost; Developed Countries; Developing Countries; Diseases; Evaluation; Family Planning; Infections; Marketing; Measurement; North America; Northern America; Qualitative Evaluation; Research Methodology; Sales; United States; Use-effectiveness; Vaginal Barrier Methods--complications; Vaginal Barrier Methods--cost; Vaginal Sponge--complications; Vaginal Sponge--cost