1. Anthony V. Perruccio, Calvin Yip, Elizabeth M. Badley, and J. Denise Power are with Healthcare & Outcomes Research and The Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada. Anthony V. Perruccio and Elizabeth M. Badley are also with Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.