Kolanowski A, Mogle J, Fick DM, Campbell N, Hill N, Mulhall P, Behrens L, Colancecco E, Boustani M, Clare L. Anticholinergic exposure during rehabilitation: cognitive and physical function outcomes in patients with delirium superimposed on dementia. Am J Geriat Physchiat. 2015 Dec;23(12):1250-8. doi: 10.1016/j.jagp.2015.07.004