1. Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
2. Department of Physiology & Pharmacology, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta, Canada T2N 4N1
3. Department of Physiology & Pharmacology, Schulich Medicine & Dentistry, University of Western Ontario, 1151 Richmond Street, London, Ontario, Canada N6A 3K7