About the Authors

Alan J. Forster

aforster@ohri.ca

Affiliations The Ottawa Hospital, Ottawa, Ontario, Canada, Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada, Institute for Clinical Evaluative Sciences, Ottawa, Ontario, Canada

Monica Taljaard

Affiliations Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada, Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Ontario, Canada

Carol Bennett

Affiliations Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada, Institute for Clinical Evaluative Sciences, Ottawa, Ontario, Canada

Carl van Walraven

Affiliations The Ottawa Hospital, Ottawa, Ontario, Canada, Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada, Institute for Clinical Evaluative Sciences, Ottawa, Ontario, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AF CvW. Analyzed the data: MT CB. Contributed to interpretation of the data: AF MT CB CvW. Developed the first draft of the manuscript: AF CB. Participated in critical revision of the draft manuscript: AF MT CB CvW. Read and approved the final manuscript: AF MT CB CvW.