Author Contributions: Dr Pannu had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Pannu, Wiebe, Tonelli.
Acquisition of data: Pannu, Wiebe, Tonelli.
Analysis and interpretation of data: Pannu, Wiebe, Tonelli.
Drafting of the manuscript: Pannu, Wiebe.
Critical revision of the manuscript for important intellectual content: Pannu, Wiebe, Tonelli.
Statistical analysis: Pannu, Wiebe, Tonelli.
Obtained funding: Tonelli.
Administrative, technical, or material support: Pannu.
Financial Disclosures: None reported.
Funding/Support: The Alberta Kidney Disease Network (AKDN) provided financial support for this project. Dr Tonelli is supported by a Population Health Investigator award from the Alberta Heritage Foundation for Medical Research and a New Investigator award from the Canadian Institute of Health Research.
Role of the Sponsor: The AKDN is a collaborative research organization that was established and is led by members of the Divisions of Nephrology at the Universities of Alberta and Calgary (www.akdn.info). The AKDN did not play a role in the design or conduct of the study; in the analysis or interpretation of the data; or in the preparation, review, or approval of the manuscript. The AKDN has no financial matters discussed in the manuscript.
Acknowledgment: We would like to thank the following individuals from the University of Alberta: Jeannette Buckingham, MLIS, for librarian support; Maria B. Ospina, BSc, MSc, and Denise Adams, BSc, for additional reviewer support; Kenny Moreau for citation management, data entry, and text retrieval; Alex Stewart for text retrieval, and Scott Klarenbach, MD, MS for graphic art. As a nonacademic staff member, Mr Stewart received compensation for his work on this article.