Recommendations for the Use of Parenteral Methotrexate in Rheumatic Diseases Jesús Tornero Molina, Jaime Calvo Alen, Javier Ballina, María Ángeles Belmonte, Francisco J. Blanco, Miguel Ángel Caracuel, Jordi Carbonell, Héctor Corominas, Eugenio Chamizo, Cristina Hidalgo, José Román Ivorra, José Luis Marenco, José Vicente Moreno Muelas, Santiago Muñoz-Fernández, Joan M. Nolla, Trinidad Pérez, Raimon Sanmarti, Pilar Trenor, Claudia Urrego, Javier Vidal, José Rosas Gomez de Salazar

Etiologic Possibilities for the Development of Rheumatic Diseases Through Environmental Mechanisms David Bañuelos-Ramírez, María L. Cedillo-Ramírez, Jorge A. Yáñez-Santos

Causes of mortality associated with autoimmune rheumatic disease in a referral hospital Herberth Leonardo, Miriam Carrascosa, Ricardo Arreola, Maynor Herrera-Méndez