1. Department of Medicine, Shifa Tameer-e-Millat University, Islamabad, Pakistan
2. Department of Cardiology, Pakistan Ordinances Factory Hospital, Wah Cantt, Pakistan
3. Department of Cardiology, Rawalpindi Institute of Cardiology, Rawalpindi, Pakistan
4. Department of Cardiology, St. Lukes General Hospital, Kilkenny, Ireland
5. Department of Cardiology, Abbas Institute of Medical Sciences, Muzaffarabad, Pakistan
6. Department of Medicine, Rawalpindi Medical University, Rawalpindi, Pakistan