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.
Shi G, Ma F, Zhu L, Zhang L, Zhao F.Shi G, et al. Among authors: zhang l.Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 1999 Dec;21(6):439-43.Zhongguo Yi Xue Ke Xue Yuan Xue Bao. 1999.PMID: 12567490Chinese.
Zhang L, Liu G, Ma W, Wen K, Zhao F, Wang S, Chen D.Zhang L, et al.Guang Pu Xue Yu Guang Pu Fen Xi. 1998 Dec;18(6):641-4.Guang Pu Xue Yu Guang Pu Fen Xi. 1998.PMID: 15825269Chinese.
Xu L, Wang Y, Yang H, Zhang L, Jonas JB.Xu L, et al. Among authors: zhang l.Br J Ophthalmol. 2007 Dec;91(12):1616-9. doi: 10.1136/bjo.2007.121509. Epub 2007 Jun 27.Br J Ophthalmol. 2007.PMID: 17596333Free PMC article.
Zhang L, Liu Y, Ma F, Gu P, Shi G, Zhao X, Li B, Gao J, Zhao F, Zhang S, Li G, Wang X, Zhu L.Zhang L, et al. Among authors: zhang s.Sci China C Life Sci. 1999 Apr;42(2):209-15. doi: 10.1007/BF02880058.Sci China C Life Sci. 1999.PMID: 18726475