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.
Zhang C, Gu YP, Yuan BP, Liu Y, Guo W, Wei HC, Lv R.Zhang C, et al. Among authors: guo w.Zhong Yao Cai. 2011 Sep;34(9):1399-402.Zhong Yao Cai. 2011.PMID: 22260010Chinese.
Gu YP, Liao YL, Zhang C, Guo W, Wei HC, Lu R.Gu YP, et al. Among authors: guo w.Zhongguo Zhong Xi Yi Jie He Za Zhi. 2013 May;33(5):627-31.Zhongguo Zhong Xi Yi Jie He Za Zhi. 2013.PMID: 23905381Chinese.