1. Department of Cardiac Sciences; University of Calgary; Calgary Alberta Canada
2. Department of Physiology & Pharmacology; University of Calgary; Calgary Alberta Canada
3. The Libin Cardiovascular Institute of Alberta; University of Calgary; Calgary Alberta Canada
4. Faculty of Medicine & Dentistry; Department of Physiology; University of Alberta; Edmonton Alberta Canada
5. Department of Critical Care Medicine; University of Calgary; Calgary Alberta Canada
6. Department of Medicine; University of Calgary; Calgary Alberta Canada