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EFFECTIVENESS OF ADDICTION SCIENCE PRESENTATIONS TO TREATMENT PROFESSIONALS, USING A MODIFIED SOLOMON STUDY DESIGNERICKSON, PH.D., CARLTON K.; WILCOX, PH.D., RICHARD E.; MILLER, PH.D., GARY W.; LITTLEFIELD, PH.D., JOHN H.; LAWSON, PH.D., KENNETH A. · Journal of Drug Education · 2003