Cheung E.NM, Benjamin S., Heckman G., Ho J.M, Lee L., Sinha S.K, Costa A.P.  2018.  Clinical characteristics associated with the onset of delirium among long-term nursing home residents. BMC Geriatr. 18(1):39.

Costa A.P, Hirdes J.P, Bell C.M, Bronskill S.E, Heckman G.A, Mitchell L., Poss J.W, Sinha S.K, Stolee P..  2015.  Derivation and validation of the detection of indicators and vulnerabilities for emergency room trips scale for classifying the risk of emergency department use in frail community-dwelling older adults. J Am Geriatr Soc. 63(4):763-9.