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.
Lu Y, Jiang BC, Cao DL, Zhang ZJ, Zhang X, Ji RR, Gao YJ.Lu Y, et al. Among authors: gao yj.Pain. 2014 Dec;155(12):2618-2629. doi: 10.1016/j.pain.2014.09.027. Epub 2014 Oct 19.Pain. 2014.PMID: 25267210Free PMC article.