1. Institute of Public Health & Social Sciences Khyber Medical University Peshawar Pakistan
2. Department of Health Services Policy & Management University of South Carolina Columbia SC USA
3. Department of Epidemiology & Biostatistics University of South Carolina Columbia SC USA
4. College of Dental Medicine Medical University of South Carolina Charleston SC USA
5. Data Management and Analysis Division Center for Policy, Planning and Evaluation DC Department of Health Washington DC USA
6. Department of Health Policy & Management University of Georgia Athens GA USA