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Contributors TD was the sole contributor to the writing and analysis of the study.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests TD is an Associate Editor of Tobacco Control with respect to Product Marketing and Promotion. He has also served as an expert witness in tobacco litigation for plaintiff counsel in class action lawsuits as well as for governments whose policies regarding the marketing and promotion of tobacco products were challenged on constitutional grounds.
Provenance and peer review Not commissioned; externally peer reviewed.