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Brenner CA, Edwards CR, Carroll CA, Kieffaber PD, Hetrick WP.Brenner CA, et al. Among authors: carroll ca.Psychophysiology. 2004 Sep;41(5):702-8. doi: 10.1111/j.1469-8986.2004.00206.x.Psychophysiology. 2004.PMID: 15318876Clinical Trial.
Carroll CA, O'Donnell BF, Shekhar A, Hetrick WP.Carroll CA, et al.Brain Cogn. 2009 Jul;70(2):181-90. doi: 10.1016/j.bandc.2009.02.001. Epub 2009 Mar 17.Brain Cogn. 2009.PMID: 19282082