Tribolet de Abreu, T. . (2000) “Rheumatoid arthritis: extra-articular manifestations, immunology and the role of methotrexate”, Internal Medicine. Lisboa, Portugal, 7(3), pp. 150–155. Available at: https://revista.spmi.pt/index.php/rpmi/article/view/1995 (Accessed: 16 November 2025).