1. Vascular Biology Center, Augusta University, Augusta, Georgia
2. Department of Medicine, The University of Arizona Health Sciences, Tucson, Arizona
3. Department of Anesthesiology and Perioperative Medicine, The University of Alabama at Birmingham School of Medicine, Birmingham, Alabama
4. Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia; and
5. Department of Medicine, University of Illinois College of Medicine, Chicago, Illinois