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.
Harvey LA, Smith MB, Davis GM, Engel S.Harvey LA, et al.Arch Phys Med Rehabil. 1997 Jul;78(7):706-11. doi: 10.1016/s0003-9993(97)90077-0.Arch Phys Med Rehabil. 1997.PMID: 9228872Clinical Trial.
Harvey LA, Davis GM, Smith MB, Engel S.Harvey LA, et al.Arch Phys Med Rehabil. 1998 Aug;79(8):945-9. doi: 10.1016/s0003-9993(98)90092-2.Arch Phys Med Rehabil. 1998.PMID: 9710167Clinical Trial.