1. Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
2. Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin
3. Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, Wisconsin
4. Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin
5. Department of Kinesiology and Applied Physiology, College of Health Sciences, University of Delaware, Newark, Delaware
6. Department of Cardiovascular and Thoracic Surgery, School of Medicine, University of Louisville, Louisville, Kentucky
7. Cardiovascular Innovation Institute, University of Louisville, Louisville, Kentucky