1. Asif Achakzai:
Armed Forces Post Graduate Medical Institute (AFPGMI), National University of Medical Sciences, Rawalpindi, Pakistan;Department of Community Medicine, Loralai Medical College, Loralai, Pakistan
2. Sumaira Masood:
Armed Forces Post Graduate Medical Institute (AFPGMI), National University of Medical Sciences, Rawalpindi, Pakistan
3. Javeria Khan:
Armed Forces Post Graduate Medical Institute (AFPGMI), National University of Medical Sciences, Rawalpindi, Pakistan