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方法在清远市清城区和连州市采用同伴推动抽样法（RDS）招募社区IDU为干预对象；
Methods IDU were recruited using RDS method in Qingcheng District and Lianzhou City.
youdao
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方法在清远市清城区和连州市采用同伴推动抽样法（RDS）招募社区IDU为干预对象；
Methods IDU were recruited using RDS method in Qingcheng District and Lianzhou City.
youdao