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搜索结果: 1-3 共查到计划生育学 Sexually Transmitted Diseases相关记录3条 . 查询时间(0.108 秒)
Context: Women's and men's number of sexual partners and protective practices such as condom use can have a direct effect on their risk of contracting sexually transmitted diseases (STDs), including H...
Context: Comparatively little is known about how U.S. adult men's attitudes and characteristics influence their decision to use contraceptives to prevent pregnancy and to take actions to protect thems...
An estimated 12 million Americans acquire a sexually transmitted disease (STD) every year. More than 25 different infectious organisms can be transmitted sexually, and five STDs—chlamydia, gonorrhea, ...

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