1. Department of Cardiology King Edward Medical University Lahore Pakistan
2. Department of Medicine King Edward Medical University Lahore Pakistan
3. Hamad Medical Corporation Doha Qatar
4. Department of Medicine Lincoln Medical Center Bronx New York USA
5. Division of Cardiovascular Medicine, Beth Israel Lahey Health Lahey Hospital and Medical Center Burlington Massachusetts USA
6. Division of Cardiology, Department of Medicine Duke University Medical Center Durham North Carolina USA
7. Department of Medicine Duke University Medical Center Durham NC USA
8. Duke Clinical Research Institute Durham North Carolina USA
9. Ahmanson‐UCLA Cardiomyopathy Center, Division of Cardiology University of California Los Angeles Los Angeles California USA