1. Division of Cardiovascular Disease and Comprehensive Cardiovascular Center, Department of Internal Medicine University of Alabama at Birmingham USA
2. Division of Molecular Imaging and Therapeutics, Department of Radiology University of Alabama at Birmingham Birmingham AL USA
3. Birmingham VA Medical Center, Departments of Internal Medicine and Radiology University of Alabama at Birmingham Birmingham AL USA
4. Cardiology Division University of Minnesota Minneapolis MN USA
5. Division of Cardiology, Department of Medicine Northwestern University Feinberg School of Medicine Chicago IL USA