Diehr PH, Thielke SM, Newman AB, Hirsch C, Tracy R. Decline in health for older adults: five-year change in 13 key measures of standardized health. J Gerontol A Biol Sci Med Sci. 2013 Sep;68(9):1059-67. doi: 10.1093/gerona/glt038. Epub 2013 May 10.
Diehr PH, Thielke SM, Newman AB, Hirsch C, Tracy R. Decline in health for older adults: five-year change in 13 key measures of standardized health. J Gerontol A Biol Sci Med Sci. 2013 Sep;68(9):1059-67. doi: 10.1093/gerona/glt038. Epub 2013 May 10.