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Lien YA, Gattuccio CI, Stepp CE.Lien YA, et al. Among authors: stepp ce.J Speech Lang Hear Res. 2014 Aug;57(4):1259-67. doi: 10.1044/2014_JSLHR-S-13-0158.J Speech Lang Hear Res. 2014.PMID: 24686466Free PMC article.