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.
Li J, Xu L, Run ZC, Feng W, Liu W, Zhang PJ, Li Z.Li J, et al. Among authors: zhang pj.World J Gastroenterol. 2018 Jun 7;24(21):2269-2278. doi: 10.3748/wjg.v24.i21.2269.World J Gastroenterol. 2018.PMID: 29881236Free PMC article.
An Y, Gao S, Zhao WC, Qiu BA, Xia NX, Zhang PJ, Fan ZP.An Y, et al. Among authors: zhang pj.World J Gastroenterol. 2018 Jun 28;24(24):2596-2604. doi: 10.3748/wjg.v24.i24.2596.World J Gastroenterol. 2018.PMID: 29962816Free PMC article.