Article Text
Research letter
Second pack survey on the prevalence of the use of smuggled cigarettes in Tehran, 2015
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Footnotes
Contributors GH had the original idea, designed the study and outlined the first draft of the manuscript. LJ contributed to the conceptualisation, revision of the article for important intellectual content and English editing. FC, MBS, LF and MRM read and approved the final manuscript.
Competing interests None declared.
Ethics approval National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Provenance and peer review Not commissioned; externally peer reviewed.