5Renvert S, Persson R E, Persson G R. Tooth loss and periodontitis in older individuals : Results from the Swedish national study on aging and care[J]. J Periodontol, 2013, 84(8) :1134-1144.
6Uchida Y, Sugiura S, Nakashima T, et al. Estimates of the size of the hearing-impaired elderly population in Japan and 10-year incidence of hearing loss by age, based on data from the National Institute for Longevity Sciences-Longitudinal Study of Aging [ J ]. Nihon Ronen Igakkai Zasshi, 2012, 49(2) :222-227.
7McCarron M, Swinbume J, Burke E, et al. Patterns of multimorbidity in an older population of persons with an intellectual disability: results from the intellectual disability supplement to the Irish longitudinal study on aging [ J]. Res Dev Disabil, 2013,34 ( 1 ) ,521-527.
8WHO QOL Group. The World Health Organization Quality of Life as- sessment (WHO QOL) :position paper from the World Health Organ- ization[ J]. Soc Sci Med, 1995,41:1409-1430.