1. Division of Molecular Physiology, School of Life Sciences, University of Dundee, Dundee, DD1 4HN, Scotland, United Kingdom;
2. University of Nottingham, Graduate Entry Medical School, City Hospital, Derby, DE22 3NE, United Kingdom
3. current addresses: 3Exercise Biology Program, University of California, Davis, California 95616;(current: ),
4. Department of Biomedical Sciences, Medical Pharmacology and Physiology, and Dalton Cardiovascular Center, University of Missouri-Columbia, Columbia, Missouri 65211;