1. Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA.
2. Department of Radiology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
3. Department of Internal Medicine, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA
4. Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55901, USA