Gray L, Berg K, Fries B, Henrard J-C, Hirdes J, Steel K, Morris J.  2009.  Sharing clinical information across care settings: the birth of an integrated assessment system. BMC Health Services Research. 9(1):71.

Vetrano DL, Foebel AD, Marengoni A, Brandi V, Collamati A, Heckman GA, Hirdes J, Bernabei R, Onder G.  2016.  Chronic diseases and geriatric syndromes: The different weight of comorbidity. European Journal of Internal Medicine. 27:62-7.