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Dey M, Gmel G, Studer J, Dermota P, Mohler-Kuo M.Dey M, et al.Eur J Public Health. 2014 Jun;24(3):496-501. doi: 10.1093/eurpub/ckt109. Epub 2013 Aug 12.Eur J Public Health. 2014.PMID: 23940073Free article.