1 Department of Medicine (Tan, Kumachev), Department of Clinical Pharmacology & Toxicology (Tan, Kumachev) and Division of Geriatric Medicine (Tan), University of Toronto; Division of General Internal Medicine and Geriatrics (Kumachev), University Health Network, Toronto, Ont. Carolyn.tan@sunnybrook.ca.
2 Department of Medicine (Tan, Kumachev), Department of Clinical Pharmacology & Toxicology (Tan, Kumachev) and Division of Geriatric Medicine (Tan), University of Toronto; Division of General Internal Medicine and Geriatrics (Kumachev), University Health Network, Toronto, Ont.