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.
Yin YH, Yu XG, Zhou DB, Wang P, Zhang YZ, Ma XD, Bu B.Yin YH, et al. Among authors: yu xg.Spine (Phila Pa 1976). 2012 Feb 1;37(3):E170-3. doi: 10.1097/BRS.0b013e318227efe7.Spine (Phila Pa 1976). 2012.PMID: 21681136
Yin YH, Yu XG, Zhou DB, Bu B, Li LF, Wang P.Yin YH, et al. Among authors: yu xg.Zhonghua Wai Ke Za Zhi. 2013 Mar;51(3):203-6.Zhonghua Wai Ke Za Zhi. 2013.PMID: 23859318Chinese.