1. Department of Medicine, Ziauddin Medical University
2. Department of Medicine, Women Medical and Dental College, Khyber Medical University, Peshawar, Pakistan
3. Department of Medicine, Jinnah Sindh Medical University
4. Department of Medicine, Dow University of Health Sciences, Karachi
5. Faculty of Medicine and Health Sciences, University of Bakht Alruda, Ad Duwaym, Sudan