Severe oral mucositis relating to pain and worse oral condition among patients with solid tumors undergoing treatment with FOLFIRI and 5-FU: a retrospective study - Almeida, Laura Costa de; Orcina, Bernardo da Fonseca; Maciel, Aloizio Premoli; Santos, Dayanne dos; Manzano, Brena Rodrigues; Santos, Paulo Sérgio da Silva (Sao Paulo Medical Journal, 2022)