1 MD candidate, Faculty of Medicine, University of Toronto, and medical student researcher, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Ontario, Canada; m.leon.carlyle@mail.utoronto.ca. MD candidate, Faculty of Medicine, University of Toronto, and medical student researcher, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Ontario, Canada. Chair, Choosing Wisely Canada and Choosing Wisely International, professor, Department of Medicine, University of Toronto, and scientist, Li Ka Shing Knowledge Institute of St. Michael's Hospital, Toronto, Ontario, Canada.