1. Pakistan Institute of Medical Science, Islamabad, Pakistan
2. University Hospital, Bristol and Weston NHS Foundation Trust, Royal College of Physicians and Surgeons of Glasgow, Glasgow, UK
3. Abbas Institute of Medical Sciences, Muzaffarabad, AJK, Pakistan
4. CMH Lahore Medical College, Lahore, Pakistan
5. Ziauddin University Hospital Karachi, Karachi, Pakistan
6. CHPE Health Services Academy, Islamabad, Pakistan
7. Resident Surgery, Combined Military Hospital, Muzaffarabad, Pakistan
8. Health Services Academy, Islamabad, Pakistan
9. MSPH Health Services Academy, Islamabad, Pakistan
10. Chief Consultant Physician/Head of Department of Medicine DHQ Teaching, Hospital Kotli AJK, Kotli, Pakistan
11. Teaching Faculty, University of Khartoum, Khartoum, Sudan.