1. Department of Medicine, Nishtar Medical University, Multan, Pakistan
2. Combined Military Hospital (CMH) Medical College, Lahore,
Punjab
3. Department of Medicine, Aga Khan University, Karachi, Pakistan
4. Department of Medicine, Bahria University Medical and Dental College, Karachi, Pakistan
5. Department of Medicine, Dow University of Health Sciences, Karachi, Pakistan
6. Division of Cardiothoracic Imaging, Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, USA