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Kostygina G, Tran H, Shi Y, Kim Y, Emery S.Kostygina G, et al.Tob Control. 2016 Oct;25(Suppl 1):i75-i82. doi: 10.1136/tobaccocontrol-2016-053094.Tob Control. 2016.PMID: 27697951Free PMC article.
Rose SW, Jo CL, Binns S, Buenger M, Emery S, Ribisl KM.Rose SW, et al.J Med Internet Res. 2017 Feb 27;19(2):e56. doi: 10.2196/jmir.5694.J Med Internet Res. 2017.PMID: 28242592Free PMC article.