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Peterson AV Jr, Marek PM, Kealey KA, Bricker JB, Ludman EJ, Heffner JL.Peterson AV Jr, et al. Among authors: heffner jl.PLoS One. 2016 Feb 1;11(2):e0146459. doi: 10.1371/journal.pone.0146459. eCollection 2016.PLoS One. 2016.PMID: 26829013Free PMC article.Clinical Trial.