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.
Fan L, Chen LL, Lin CG, Peng YF, Zheng XC, Luo YK, Zhang FL, Chen JH, Yan XP, Huang ZR.Fan L, et al.Chin Med J (Engl). 2008 Aug 20;121(16):1518-23.Chin Med J (Engl). 2008.PMID: 18982862
Chen J, Chen Q, Zhang F, Chen X, Xu Z, Jiang Q, Sun X, Li J, Chen L, Wang W.Chen J, et al. Among authors: chen l, chen q, chen x.Int J Gen Med. 2021 Mar 1;14:697-707. doi: 10.2147/IJGM.S294033. eCollection 2021.Int J Gen Med. 2021.PMID: 33688241Free PMC article.