Pattern and its associated risk factors among male STD clinic attendees in China : An focientry-point for HIV intervention
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Hu Xiping | Wang Qian-qiu | C. Xiangsheng | Yin Yueping | Lian Guojun | Jiang Ning | D. Ting | Yang Bing | L. Qiao | Z. Yu-jiao | W. Baoxi