The demographic character of the study participants.
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资源简介：
IDUs, intravenous drug users; NS, not significant.adata available for 400 subjects.bdata available for 289 subjects.cdata available for 391 subjects.ddata available for 240 subjects.edata available for 385 subjects.fdata available for 242 subjects.gTotal number of subjects with known gender.hTotal number of subjects with known ethnicity.
创建时间：
2015-12-02
