Methotrexate as a preferential cyclooxygenase 2 inhibitor in whole blood of patients with rheumatoid arthritis - Mello, Suzana Beatriz Veríssimo de; Barros, D. M.; Silva, A. S. F.; Laurindo, Iêda Maria Magalhães; Novaes, G. S. (Rheumatology, 2000)