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.
Sim MF, Stone MD, Phillips CJ, Cheung WY, Johansen A, Vasishta S, Pettit RJ, Evans WD.Sim MF, et al. Among authors: evans wd.Technol Health Care. 2005;13(2):75-85.Technol Health Care. 2005.PMID: 15912005
Johansen A, Evans W, Stone M.Johansen A, et al.Arch Gerontol Geriatr. 1999 May-Jun;28(3):239-46. doi: 10.1016/s0167-4943(99)00010-2.Arch Gerontol Geriatr. 1999.PMID: 15374085