Willingness of Chinese injection drug users to participate in HIV vaccine trials.
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Y. Ruan | Y. Shao | H. Qian | L. Yin | Qing-chun Li | Yuan-zhi Zhang | B. Rui | Lijiang Zhang | Junling Zhu | Yong-sheng Guan | Yunxia Wang | Qingchun Li | Baoling Rui