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.
Clark DO, Callahan CM, Counsell SR.Clark DO, et al.J Am Geriatr Soc. 2005 Sep;53(9):1582-6. doi: 10.1111/j.1532-5415.2005.53485.x.J Am Geriatr Soc. 2005.PMID: 16137291
Counsell SR, Callahan CM, Buttar AB, Clark DO, Frank KI.Counsell SR, et al. Among authors: clark do.J Am Geriatr Soc. 2006 Jul;54(7):1136-41. doi: 10.1111/j.1532-5415.2006.00791.x.J Am Geriatr Soc. 2006.PMID: 16866688
Counsell SR, Callahan CM, Clark DO, Tu W, Buttar AB, Stump TE, Ricketts GD.Counsell SR, et al. Among authors: clark do.JAMA. 2007 Dec 12;298(22):2623-33. doi: 10.1001/jama.298.22.2623.JAMA. 2007.PMID: 18073358Clinical Trial.
Keith NR, Clark DO, Stump TE, Miller DK, Callahan CM.Keith NR, et al. Among authors: clark do.J Phys Act Health. 2014 May;11(4):853-9. doi: 10.1123/jpah.2012-0264. Epub 2013 May 10.J Phys Act Health. 2014.PMID: 23676451Free PMC article.