1 Department of Internal Medicine, University of Missouri School of Medicine, Columbia, MODiabetes and Cardiovascular Center, University of Missouri, Columbia, MOHarry S. Truman VA Medical Center, Columbia, MO.
2 Department of Internal Medicine, University of Missouri School of Medicine, Columbia, MODepartment of Medical Pharmacology and Physiology, University of Missouri School of Medicine, Columbia, MODiabetes and Cardiovascular Center, University of Missouri, Columbia, MOHarry S. Truman VA Medical Center, Columbia, MO demarcov@missouri.edu.