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Barbeiro S, Martins C, Gonçalves C, Alves P, Gil I, Canhoto M, Silva F, Cotrim I, Amado C, Eliseu L, Vasconcelos H.
Barbeiro S, et al. Among authors: vasconcelos h.
Ann Coloproctol. 2016 Aug;32(4):156-8. doi: 10.3393/ac.2016.32.4.156. Epub 2016 Aug 31.
Ann Coloproctol. 2016.
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Free PMC article.