Disease burden and costs for patients with hip and knee osteoarthritis and chronic moderate-to-severe refractory pain on treatment with strong opioids in Spain Antoni Sicras-Mainar; Javier Rejas-Gutierrez; Francisco Vargas-Negrín; Juan Carlos Tornero-Tornero; Aram Sicras-Navarro; Isabel Lizarraga;

Ocular inflammatory manifestations in patients with rheumatoid arthritis Raul E. Ruiz-Lozano; Luis Arnaldo Prida-Espaillat; Reinaldo A. Moll-Auais; Eugenia M. Ramos-Dávila; Manuel E. Quiroga-Garza; Aaron Zhao; Ali Khodor; Amr Almobayed; David Vega-Morales; Alejandro Rodriguez-Garcia;

Spanish cross-cultural adaptation and psychometric validation of the graded chronic pain scale revised for fibromyalgia José Édgar Ferrández-Gómez; Mariano Gacto-Sánchez; Aitor Baño-Alcaraz;