Factors predictive of proximal disease extension and clinical course of patients initially diagnosed with ulcerative proctitis in an IBD referral center - Ferreira, Sandro da Costa; Aprile, Lilian Rose Otoboni; Parra, Rogério Serafim; Feitosa, Marley Ribeiro; Perdona, Gleici de Castro Silva; Feres, Omar; Rocha, José Joaquim Ribeiro da; Troncon, Luiz Ernesto de Almeida (Turkish Journal of Gastroenterology, 2022)