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Walsh MM, Hilton JF, Ernster VL, Masouredis CM, Grady DG.Walsh MM, et al. Among authors: hilton jf.Addict Behav. 1994 Jul-Aug;19(4):411-27. doi: 10.1016/0306-4603(94)90064-7.Addict Behav. 1994.PMID: 7992676
Walsh MM, Hilton JF, Masouredis CM, Gee L, Chesney MA, Ernster VL.Walsh MM, et al. Among authors: hilton jf.Am J Public Health. 1999 Feb;89(2):228-34. doi: 10.2105/ajph.89.2.228.Am J Public Health. 1999.PMID: 9949754Free PMC article.Clinical Trial.