Swayampakala, Kamala ; Thrasher, James F ; Yong, Hua-Hie... Swayampakala , K , Thrasher , J F , Yong , H-H , Nagelhout , G E , Li , L , Borland , R , Hammond , D , O'Connor , R J & Hardin , J W 2018 , ' Over-Time Impacts of Pictorial Health Warning Labels and their Differences across Smoker Subgroups : Results from Adult Smokers in Canada and Australia ' , Nicotine & Tobacco Research , vol. 20 , no. 7 , pp. 888-896 . https://doi.org/10.1093/ntr/ntx134.
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2018