Functional and anatomical analysis of the anorectum of female scleroderma patients at a center for pelvic floor disorders - Pinto, Rodrigo Ambar; Corrêa Neto, Isaac José Felippe; Nahas, Sérgio Carlos; Bustamante Lopes, Leonardo Alfonso; Sobrado Júnior, Carlos Walter; Cecconello, Ivan (Arquivos de gastroenterologia, 2018)