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Garnick DW, Horgan CM, Chalk M.Garnick DW, et al. Among authors: chalk m.Alcohol Res Health. 2006;29(1):19-26.Alcohol Res Health. 2006.PMID: 16767849Free PMC article.
Baser O, Chalk M, Fiellin DA, Gastfriend DR.Baser O, et al. Among authors: chalk m.Am J Manag Care. 2011 Jun;17 Suppl 8:S235-48.Am J Manag Care. 2011.PMID: 21761950