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;

Giant cell tumor of the tendon sheaths Carmen Raya-Santos; José Antonio Bernal; José Rosas; María Cabezas Macían;

Evaluation of the psychometric properties of the Functional Ability Scale in children with juvenile idiopathic arthritis Juan Pablo Ford; Enrique Roberto Soriano; Mauro Andreu;