1. Rawalpindi Medical University , Rawalpindi, Tipu road, Chamanzar Colony , Rawalpindi, 46000, Pakistan
2. Department of Cardiology, Medical College of Georgia at Augusta University , GA, 30912, USA
3. Department of Cardiology Research, Larkin Community Hospital , South Miami, FL, 33143, USA
4. Division of Cardiology, University of Louisville School of Medicine , Louisville, KY, 40202, USA