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;

Clinical course and flare predictors in patients with rheumatoid arthritis in low disease activity and ultrasound remission monitored by ultrasound yearly and on-demand: A prospective 2-year observation study Takeo Abe; Masao Tamura; Kazuyuki Tsuboi; Yuko Minagawa; Kazuteru Noguchi; Chie Ogita; Teppei Hashimoto; Naoto Azuma; Kiyoshi Matsui;