1. Nasir Iqbal:
Department of Cardiology &Research Center, Gulab Devi Chest Hospital, Lahore, Pakistan
2. Usman Javed Iqbal:
Department of Cardiology & Research Center, Gulab Devi Chest Hospital, Lahore, Pakistan
3. Muhammad Imran Hanif:
Department of Cardiology & Research Center, Gulab Devi Chest Hospital, Lahore, Pakistan
4. Majid Kaleem:
Department of Cardiology & Research Center, Gulab Devi Chest Hospital, Lahore, Pakistan