title: The Reply.
authors.affiliation: Department of Medicine, University of Toronto, Ontario, Canada; Evaluative Clinical Sciences, Sunnybrook Research Institute, University of Toronto, Ontario, Canada.
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Yarnell
authors.affiliation: Department of Medicine, University of Toronto, Ontario, Canada; Division of General Internal Medicine, University of Toronto, Ontario, Canada.
authors.forename: Steven
authors.initials: S
authors.lastname: Shadowitz
authors.affiliation: Department of Medicine, University of Toronto, Ontario, Canada; Evaluative Clinical Sciences, Sunnybrook Research Institute, University of Toronto, Ontario, Canada; Division of General Internal Medicine, University of Toronto, Ontario, Canada; Institute of Clinical Evaluative Sciences (ICES) in Ontario, Toronto, Canada; Institute for Health Policy Management and Evaluation, University of Toronto, Ontario, Canada.
authors.forename: Donald A
authors.initials: DA
authors.lastname: Redelmeier