1. Department of Critical Care, Wythenshawe Hospital, Manchester, England
2. Medical Student, Lahore Medical and Dental College, Lahore, Pakistan
3. Department of Cardiology, Mardan Medical Complex, Mardan, Pakistan
4. Medical Student, Rawalpindi Medical University, Rawalpindi, Pakistan
5. Department of Cardiology, Rawalpindi Institute of Cardiology, Rawalpindi, Pakistan
6. Medical Student, Shifa College of Medicine, Islamabad, Pakistan
7. Department of Medicine, Rawalpindi Medical University, Rawalpindi, Pakistan
8. Department of Cardiology, Akbar Niazi Teaching Hospital, Islamabad, Pakistan
9. Department of Electrophysiology, Armed Forces Institute of Cardiology, Rawalpindi, Pakistan