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Tang Z, Zhang C, Li X, Liu Y, Su S, Zhou Y, Shen Z.Tang Z, et al. Among authors: zhang c.AIDS Care. 2015;27(3):293-300. doi: 10.1080/09540121.2014.980214. Epub 2014 Nov 19.AIDS Care. 2015.PMID: 25407357Free PMC article.
Liu Y, Wang J, Qian HZ, Liu H, Yin L, Lu H, Zhang C, Ruan Y, Shao Y, Vermund SH.Liu Y, et al. Among authors: zhang c.AIDS Behav. 2016 Oct;20(10):2222-2230. doi: 10.1007/s10461-016-1371-4.AIDS Behav. 2016.PMID: 27000143Free PMC article.
Liu Y, Li D, Vermund SH, Zhang C, Ruan Y, Yin L, Liu H, Amico KR, Shao Y, Qian HZ.Liu Y, et al. Among authors: zhang c.AIDS Care. 2016 Nov;28(11):1461-6. doi: 10.1080/09540121.2016.1189502. Epub 2016 May 29.AIDS Care. 2016.PMID: 27236988Free PMC article.
Zhang C, Li X, Liu Y, Qiao S, Zhou Y, Tang Z, Shen Z.Zhang C, et al.BMC Public Health. 2015 Dec 9;15:1223. doi: 10.1186/s12889-015-2561-0.BMC Public Health. 2015.PMID: 27391948Free PMC article.
Zhang C, Qian HZ, Yin L, Liu Y, Strauss SM, Ruan Y, Shao Y, Lu H, Vermund SH.Zhang C, et al.Subst Use Misuse. 2016 Dec 5;51(14):1821-30. doi: 10.1080/10826084.2016.1197264. Epub 2016 Sep 8.Subst Use Misuse. 2016.PMID: 27608264Free PMC article.Clinical Trial.
Liu Y, Ruan Y, Strauss SM, Yin L, Liu H, Amico KR, Zhang C, Shao Y, Qian HZ, Vermund SH.Liu Y, et al. Among authors: zhang c.Drug Alcohol Depend. 2016 Nov 1;168:239-246. doi: 10.1016/j.drugalcdep.2016.09.020. Epub 2016 Sep 30.Drug Alcohol Depend. 2016.PMID: 27723554Free PMC article.