1Northwest Kidney Centers, Seattle, Washington

2Department of Medicine, University of Washington, Seattle, Washington

3VA Puget Sound Health Care System, U.S. Department of Veterans Affairs, Seattle, Washington

4Division of Nephrology, Western University, London, Ontario, Canada

5Ontario Renal Network, Toronto, Ontario, Canada

6Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts

7Department of Population Health Sciences, Weill Cornell Medicine, New York, New York

8The Rogosin Institute, New York, New York

9Department of Medicine, Tufts Medical Center, Boston, Massachusetts

Correspondence: Dr. Suzanne Watnick, Northwest Kidney Centers, 700 Broadway, Seattle, WA 98122. Email: [email protected]