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Pinkham AE, Penn DL, Perkins DO, Graham KA, Siegel M.Pinkham AE, et al. Among authors: perkins do.Cogn Neuropsychiatry. 2007 May;12(3):198-212. doi: 10.1080/13546800600985557.Cogn Neuropsychiatry. 2007.PMID: 17453901
Graham KA, Perkins DO, Edwards LJ, Barrier RC Jr, Lieberman JA, Harp JB.Graham KA, et al. Among authors: perkins do.Am J Psychiatry. 2005 Jan;162(1):118-23. doi: 10.1176/appi.ajp.162.1.118.Am J Psychiatry. 2005.PMID: 15625209
Graham KA, Gu H, Lieberman JA, Harp JB, Perkins DO.Graham KA, et al. Among authors: perkins do.Am J Psychiatry. 2005 Sep;162(9):1744-6. doi: 10.1176/appi.ajp.162.9.1744.Am J Psychiatry. 2005.PMID: 16135638Clinical Trial.