An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Xu Q, Yang CH, Liu Q, Jin XF, Xu XT, Tong JL, Xiao SD, Ran ZH.Xu Q, et al. Among authors: ran zh.J Dig Dis. 2011 Jun;12(3):181-7. doi: 10.1111/j.1751-2980.2011.00494.x.J Dig Dis. 2011.PMID: 21615871
Ran ZH, Liu J, Feng Y, Zou J, Xiao SD.Ran ZH, et al.Chin J Dig Dis. 2004;5(3):93-7. doi: 10.1111/j.1443-9573.2004.00163.x.Chin J Dig Dis. 2004.PMID: 15612242
Zou J, Ran ZH, Xu Q, Xiao SD.Zou J, et al. Among authors: ran zh.Chin J Dig Dis. 2005;6(1):15-20. doi: 10.1111/j.1443-9573.2005.00181.x.Chin J Dig Dis. 2005.PMID: 15667553
Cao Q, Ran ZH, Xiao SD.Cao Q, et al. Among authors: ran zh.J Dig Dis. 2007 Feb;8(1):15-22. doi: 10.1111/j.1443-9573.2007.00271.x.J Dig Dis. 2007.PMID: 17261130
Xu Q, Jin XF, Ran ZH, Yang CH, Xiao SD.Xu Q, et al. Among authors: ran zh.Zhonghua Yi Xue Za Zhi. 2007 Mar 27;87(12):855-8.Zhonghua Yi Xue Za Zhi. 2007.PMID: 17565874Chinese.