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Wells R, Lemak CH, Alexander JA, Nahra TA, Ye Y, Campbell CI.Wells R, et al. Among authors: campbell ci.J Subst Abuse Treat. 2007 Jul;33(1):43-50. doi: 10.1016/j.jsat.2006.11.010. Epub 2007 Jan 16.J Subst Abuse Treat. 2007.PMID: 17588488