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Schulenberg JE, Merline AC, Johnston LD, O'Malley PM, Bachman JG, Laetz VB.Schulenberg JE, et al. Among authors: johnston ld.J Drug Issues. 2005;35(2):255-279. doi: 10.1177/002204260503500203.J Drug Issues. 2005.PMID: 16534532Free PMC article.