1. Division of Cardiovascular Disease, University of Alabama at Birmingham
2. Division of Cardiovascular Medicine and Department of Radiology, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts
3. Division of Nephrology, Department of Medicine, University of Alabama at Birmingham
4. Department of Epidemiology, University of Alabama at Birmingham
5. Department of Biostatistics, University of Alabama at Birmingham
6. Department of Medicine, Larner College of Medicine at the University of Vermont, Burlington
7. Section of Cardiology, Birmingham Veterans Affairs Medical Center, Birmingham, Alabama