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Xi JK, Jin YZ, Cui X, Xu Z.Xi JK, et al. Among authors: xu z.Sheng Li Xue Bao. 2007 Oct 25;59(5):553-61.Sheng Li Xue Bao. 2007.PMID: 17940694Free article.
Xu Z, Jang Y, Mueller RA, Norfleet EA.Xu Z, et al.Cardiovasc Drug Rev. 2006 Fall-Winter;24(3-4):227-38. doi: 10.1111/j.1527-3466.2006.00227.x.Cardiovasc Drug Rev. 2006.PMID: 17214599Review.