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;

Anti-TNF¿ drug levels in patients with rheumatoid arthritis and spondyloarthritis Erardo Meriño-Ibarra; Francisco Javier Manero Ruíz;

Recommendations by the Spanish Society of Rheumatology on risk management of biological treatment and JAK inhibitors in patients with rheumatoid arthritis Alejandro Balsa; Petra Díaz del Campo Fontecha; Lucía Silva Fernández; José Valencia Martín; Virginia Nistal Martínez; Fernando León Vázquez; M. Vanesa Hernández Hernández; Héctor Corominas; Rafael Cáliz Cáliz; José María Aguado García; Gloria Candelas Rodríguez; Nora Ibargoyen Roteta; Arturo Martí Carvajal; M. Nieves Plana Farras; Janet Puñal Riobóo; Hye Sang Park; Yolanda Triñanes Pego; Virginia Villaverde García;