Development and feasibility of 4 checklists for the evaluation of comorbidity in patients with rheumatoid arthritis, axial spondyloarthritis and psoriatic arthritis: GECOAI Project Santos Castañeda; Carlos González; Virginia Villaverde; Cristina Lajas Petisco; María Carmen Castro; Fernando Jirout; Juan Carlos Obaya; Juan Carlos Hermosa; Carmen Suárez; Silvia García; María Rodero; Leticia León; Amparo López Esteban; Milena Gobbo; Laly Alcaide; Juan Carlos Torre-Alonso;

Practical aspects of biological throught levels and antidrug antibodies in rheumatoid arthritis and spondyloarthritis José Rosas; María Martín-López; Teresa Otón; Alejandro Balsa; Jaime Calvo-Alén; Raimon Sanmartí; Jesús Tornero; Loreto Carmona;

Right ventriculoarterial coupling as a marker of subclinical myocardial damage in rheumatoid arthritis Tomás Miranda-Aquino; Diego Alejandro Ramos-Aguas; Silvia Esmeralda Pérez-Topete; María del Socorro Cepeda-Rocha; Xochitl Citlalli Gómez-Gómez; Daniel Ochoa-Castillo; Sergio Cerpa-Cruz; Verónica González-Díaz; Christian González-Padilla; Jorge Eduardo Hernández-del Río;