Authors' reply to Smith, Johnson, and Gray and Jani

Affiliations

• ¹ Department of Medicine, University of Toronto, Toronto, ON, Canada William.Silverstein@mail.utoronto.ca.
• ² Choosing Wisely Canada, Toronto.
• ³ Department of Medicine, University of Toronto, Toronto, ON, Canada.
• ⁴ Centre for Quality Improvement and Patient Safety, University of Toronto.
• ⁵ Department of Internal Medicine, Dell Medical School, University of Texas at Austin, Austin, TX, USA.
• ⁶ Costs of Care, Boston, MA, USA.
• ⁷ Institute of Health Policy, Management & Evaluation, Dalla Lana School of Public Health, University of Toronto.