1. From the Division of Clinical Pharmacology, Department of Medicine (D.G.H.), Western University, London, Ontario, Canada.
2. Stroke Prevention and Atherosclerosis Research Centre, Robarts Research Institute (D.G.H.), Western University, London, Ontario, Canada.
3. Division of Endocrinology and Metabolism, Department of Medicine (R.A.H.), Western University, London, Ontario, Canada.
4. Molecular Medicine Research Laboratories, Robarts Research Institute (R.A.H.), Western University, London, Ontario, Canada.