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Xi ZF, Xia Q, Zhang JJ, Chen XS, Han LZ, Wang X, Shen CH, Luo Y, Xin TY, Wang SY, Qiu DK.Xi ZF, et al. Among authors: xia q.J Dig Dis. 2009 Nov;10(4):321-7. doi: 10.1111/j.1751-2980.2009.00403.x.J Dig Dis. 2009.PMID: 19906113Clinical Trial.
Qian LJ, Zhu J, Zhuang ZG, Xia Q, Liu Q, Xu JR.Qian LJ, et al. Among authors: xia q.Radiographics. 2013 Sep-Oct;33(5):1419-33. doi: 10.1148/rg.335125063.Radiographics. 2013.PMID: 24025933