Anti-TNF therapy for ulcerative colitis in Brazil: a comparative real-world national retrospective multicentric study from the Brazilian study group of IBD (GEDIIB) - Sassaki, ligia Yukie; Magro, Daniela Oliveira; Saad-Hossne, Rogerio; Baima, Julio Pinheiro; Flores, Cristina; Correia, Lucianna Motta; Celani, Lívia Medeiros Soares; Ferrari, Maria de Lourdes de Abreu; Zacharias, Patrícia; Feitosa, Marley Ribeiro; Santos, Carlos Henrique Marques dos; Lins Neto, Manoel Àlvaro de Freitas (BMC Gastroenterology, 2022)