Ukkapin P, Benjakul S, Sillabutra J. The effect of pictorial health warning labels on intention to not smoke among the upper secondary school students, Sakon Nakhon province. Dis Control J [Internet]. 2021 Dec. 29 [cited 2024 Apr. 18];47(Suppl 2):1215-27. Available from: https://he01.tci-thaijo.org/index.php/DCJ/article/view/246724