1. Division of Nephrology University Health Network, University of Toronto Toronto Ontario Canada
2. CNR Institute of Clinical Physiology Pisa Italy
3. Emory University Atlanta Georgia USA
4. Keck School of Medicine of the University of Southern California Los Angeles California USA
5. Velocity Clinical Research at Medical City Dallas Texas USA
6. Lexicon Pharmaceuticals, Inc. The Woodlands Texas USA
7. Indiana University School of Medicine Richard L Roudebush VA Medical Center Indianapolis Indiana USA