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.
Hooten WM.Hooten WM.Phys Med Rehabil Clin N Am. 2020 May;31(2):265-277. doi: 10.1016/j.pmr.2020.01.006. Epub 2020 Mar 11.Phys Med Rehabil Clin N Am. 2020.PMID: 32279729Free PMC article.Review.