1. Department of Pharmacology and Therapeutics, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z3;
2. The Water and Salt Research Center, Department of Physiology, Faculty of Medicine, University of Aarhus, 8000 Aarhus C, Denmark;
3. Department of Clinical Pathology, McDonald Research Laboratories, The iCAPTURE Center, St Paul's Hospital, Vancouver, British Columbia, Canada V62 1Y6;
4. Division of Cardiology, University of Colorado Health Sciences Center, Denver 80262; and
5. Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder, Colorado 80309