The relation between disease severity and cost of caring for patients with Alzheimer disease in Canada. - Herrmann N; Tam DY; Balshaw R; Sambrook R; Lesnikova N; Lanctôt KL; Canadian Outcomes Study in Dementia Investigators; Herrmann, Nathan; Tam, Derrick Y; Balshaw, Robert; Sambrook, Robert; Lesnikova, Nadia; et al. (Canadian Journal of Psychiatry, 2010)