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Willoughby M, Kupersmidt J, Voegler-Lee M, Bryant D.Willoughby M, et al. Among authors: kupersmidt j.Dev Neuropsychol. 2011;36(2):162-80. doi: 10.1080/87565641.2010.549980.Dev Neuropsychol. 2011.PMID: 21347919Free PMC article.