1. Department of Health Sciences, University of York, York YO10 5DD, UK
2. Tobacco Control Cell, Ministry of National Health Services, Regulation and Coordination, Islamabad, Pakistan
3. Office of Research Innovation and Commercialization, Khyber Medical University, Peshawar, Pakistan
4. Campaign for Tobacco Free Kids, Washington, DC 20005
5. Department of Medicine, Aga Khan University, Karachi, Pakistan
6. Department of Clinical Sciences, Brunel University London, Uxbridge, Middlesex UB8 3PH, UK
7. Department of Community Health Sciences, Aga Khan University, Karachi, Pakistan
8. Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh EH8 9DX, UK
9. Department of Politics, University of York, York YO10 5DD, UK