1. Department of Internal Medicine University of New Mexico Health Sciences Center Albuquerque NM USA
2. Division of Cardiology Duke University Medical Center Durham NC USA
3. Department of Biomedical Engineering Duke University Durham NC USA
4. Department of Biostatistics & Bioinformatics Duke University Durham NC USA
5. Department of Internal Medicine Forest General Hospital Hattiesburg MO USA
6. Duke University Hospital School of Medicine Durham NC USA
7. Department of Biomedical Research Cardiff Metropolitan University School of Sport and Health Sciences Cardiff United Kingdom
8. Duke Clinical Research Institute Durham NC USA