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Factors associated with unprotected anal intercourse among male students who have sex with men in th
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目的 了解不同性角色男男性行为人群（men who have sex with men,MSM）的肛周人乳头瘤病毒（human papillomavirus,HPV）感染状况及其相关......
Urgent Need for Contraceptive Education and Services in ChineseUnmarried Undergraduates: A Multi-cam
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目的 了解重庆市男男性接触人群(MSM)艾滋病病毒(HIV)感染率及其影响因素.方法 2007年7-9月在重庆市渝中区、九龙坡区和沙坪坝区通......
