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Silverman CA, Silman S, Emmer MB, Schoepflin JR, Lutolf JJ.Silverman CA, et al.J Am Acad Audiol. 2006 Nov-Dec;17(10):747-62. doi: 10.3766/jaaa.17.10.6.J Am Acad Audiol. 2006.PMID: 17153722