1. Departments of Medicine and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Canada
2. Department of Health Services Research, Management and Policy, University of Florida, Gainesville, Florida
3. Department of Intensive Care Medicine, Saint-Etienne University Hospital, Saint-Priest-En-Jarez, France
4. Department of Medicine, Division of Nephrology, Columbia University Medical Center, New York, NY, USA
5. Division of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
6. Department of Pediatrics, Division of Pediatric Nephrology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
7. Department of Nephrology, Dialysis and Transplantation, International Renal Research Institute of Vicenza, San Bortolo Hospital, Vicenza, Italy
8. Center for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA, USA