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Perez-Brayfield MR, Baseman A, Kirsch AJ.Perez-Brayfield MR, et al. Among authors: kirsch aj.Adolesc Med Clin. 2005 Feb;16(1):215-27, xiii. doi: 10.1016/j.admecli.2004.09.004.Adolesc Med Clin. 2005.PMID: 15844393Review.