Flacker J.M, Kiely D.K.  1998.  A practical approach to identifying mortality-related factors in established long-term care residents. J Am Geriatr Soc. 46(8):1012-5.

Kiely D.K, Simon S.E, Jones R.N, Morris J.N.  2000.  The protective effect of social engagement on mortality in long-term care. Journal of the American Geriatrics Society. 48(11):1367-72.