1. Department of Cardiology Rawalpindi Institute of Cardiology Rawalpindi Pakistan
2. Department of Cardiology Wah Medical College Wah Pakistan
3. Department of Cardiology DHQ Hospital Chakwal Pakistan
4. Department of Medicine Military Hospital Rawalpindi Pakistan
5. Department of Cardiology Armed Forces Institute of Cardiology Rawalpindi Pakistan
6. Department of Medicine Rawalpindi Medical University Rawalpindi Pakistan
7. Department of Medicine Royal College of Surgeons in Ireland Dublin Ireland