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.
Liu H, Dang Y, Chai X, Wang Z, Ma L, Ren Q.Liu H, et al.Clin Exp Dermatol. 2007 Nov;32(6):646-9. doi: 10.1111/j.1365-2230.2007.02517.x.Clin Exp Dermatol. 2007.PMID: 17953633
Ma YZ, Chai XY, Ren QS.Ma YZ, et al. Among authors: chai xy.Zhongguo Yi Liao Qi Xie Za Zhi. 2007 Nov;31(6):411-4.Zhongguo Yi Liao Qi Xie Za Zhi. 2007.PMID: 18269038Chinese.
Chai X, Li L, Wu K, Zhou C, Cao P, Ren Q.Chai X, et al.IEEE Eng Med Biol Mag. 2008 Sep-Oct;27(5):20-8. doi: 10.1109/MEMB.2008.923959.IEEE Eng Med Biol Mag. 2008.PMID: 18799386No abstract available.