1. Division of General Surgery, McMaster University, Hamilton, Ontario, Canada
2. ICES, Toronto, Ontario, Canada
3. Department of Clinical Epidemiology and Biostatistics, Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
4. Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, Ontario, Canada
5. Department of Family Medicine, McMaster University, Hamilton, Ontario, Canada
6. Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
7. Programs for Assessment of Technology in Health Research Institute, St Joseph’s Healthcare, McMaster University, Hamilton, Ontario, Canada