Systematic review and meta-analysis of the efficacy and safety of leflunomide and methotrexate in the treatment of rheumatoid arthritis Roberto Alfaro-Lara, Hector Fabricio Espinosa-Ortega, César Alejandro Arce-Salinas

Effect of combined treatment with prednisone and methotrexate versus prednisone alone over laboratory parameters in giant cell arteritis Ines Perez-Sancristobal, Paula Alvarez-Hernandez, Cristina Lajas-Petisco, Benjamin Fernandez-Gutierrez

Effectiveness of subcutaneous methotrexate in patients with rheumatoid arthritis and its long-term persistence Pedro Santos-Moreno, Rosmery V. Barroso-Parra, María Carrasquilla-Sotomayor, Nelson Rafael Alvis-Zakzuk, Lina Moyano-Tamara, Nelson J. Alvis-Zakzuk, Josefina Zakzuk