1. Department of Medicine, Division of Nephrology, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
2. Department of Medicine, Division of Nephrology, Department of Pediatrics, Section of Endocrinology, University of Colorado School of Medicine, Aurora, Colorado
3. Diabetes Center, Department of Internal Medicine, VU University Medical Center, Netherlands
4. The George Institute for Global Health, Sydney, Australia
5. Department of Clinical Pharmacology, University of Groningen, Groningen, Netherlands