Journal of Coloproctology (Rio de Janeiro), Volume: 40, Issue: 4, Pages: 376-385, Published: 07 DEC 2020 Journal of Coloproctology, Vol 40, Iss 4, Pp 376-385 (2020) Journal of Coloproctology (Rio de Janeiro) v.40 n.4 2020 Journal of Coloproctology (Rio de Janeiro. Online) Sociedade Brasileira de Coloproctologia (SBCP) instacron:SBCP