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Hu YY, Sun XR, Lin XP, Liang PY, Zhang X, Fan W.Hu YY, et al. Among authors: zhang x.Ai Zheng. 2009 Sep;28(9):994-9. doi: 10.5732/cjc.009.10097.Ai Zheng. 2009.PMID: 19728921Free article.Chinese.
Zhang X, Fan W, Hu YY, Li ZM, Xia ZJ, Lin XP, Zhang YR, Liang PY, Li YH.Zhang X, et al. Among authors: zhang yr.Chin J Cancer. 2015 Jun 10;34(6):264-71. doi: 10.1186/s40880-015-0021-y.Chin J Cancer. 2015.PMID: 26063296Free PMC article.
Zhang L, Zhang X, He Q, Zhang R, Fan W.Zhang L, et al. Among authors: zhang r, zhang x.Cancer Imaging. 2018 May 15;18(1):19. doi: 10.1186/s40644-018-0152-x.Cancer Imaging. 2018.PMID: 29764500Free PMC article.