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.
Chen M, Zhang L, Xu J, Chen X, Gu Y, Ren Y, Wang K.Chen M, et al. Among authors: xu j.BMC Ophthalmol. 2019 Nov 14;19(1):225. doi: 10.1186/s12886-019-1236-5.BMC Ophthalmol. 2019.PMID: 31726999Free PMC article.
Li S, Li H, Hu Y, Zhu S, Xu Z, Zhang Q, Yang Y, Wang Z, Xu J.Li S, et al. Among authors: xu z, xu j.Int J Med Sci. 2020 Oct 18;17(18):2947-2953. doi: 10.7150/ijms.49637. eCollection 2020.Int J Med Sci. 2020.PMID: 33173415Free PMC article.