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Freitas RGBON, Nogueira RJN, Hessel G.Freitas RGBON, et al.Rev Assoc Med Bras (1992). 2018 Mar;64(3):217-223. doi: 10.1590/1806-9282.64.03.217.Rev Assoc Med Bras (1992). 2018.PMID: 29641780Free article.