Safety of methotrexate in rheumatoid arthritis: a retrospective cohort study in clinical practice. Reumatismo, [S. l.], v. 58, n. 4, p. 261–267, 2006. DOI: 10.4081/reumatismo.2006.261. Disponível em: https://www.reumatismo.org/reuma/article/view/reumatismo.2006.261. Acesso em: 16 jun. 2025.