1. Diabetes and Cardiovascular Center, University of Missouri School of Medicine, Columbia, MO 65212, USA;
2. Research Service, Harry S Truman Memorial Veterans Hospital, Research Service, 800 Hospital Dr, Columbia, MO 65212, USA;
3. Department of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, MO 65212, USA;
4. Dalton Cardiovascular Research Center, University of Missouri School of Medicine, Columbia, MO 65212, USA