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Machado R, Ferrari CH, Back E, Comparin D, Tomazinho LF, Vansan LP.Machado R, et al. Among authors: vansan lp.Iran Endod J. 2016 Winter;11(1):63-6. doi: 10.7508/iej.2016.01.012. Epub 2015 Dec 24.Iran Endod J. 2016.PMID: 26843880Free PMC article.Review.