1. From the Heart Institute of Good Samaritan Hospital
2. Keck School of Medicine, Division of Cardiovascular Medicine,
University of Southern California,
Los Angeles
3. Department of Surgery,
University of Pennsylvania,
Glenolden
4. Department of Kinesiology,
East Carolina University
5. Department of Physiology
6. Department of Cardiovascular Sciences,
Brody School of Medicine,
East Carolina University,
Greenville, NC