No radiographic sacroiliitis progression was observed in patients with early spondyloarthritis at 6 years: results of the Esperanza multicentric prospective cohort oleh Clementina López-Medina, Eugenio De Miguel, Eva Galindez, Carolina Tornero, Raquel Almodovar, Cristina Fernández-Carballido, M Carmen Castro-Villegas, José Francisco García-Llorente, María Luz García-Vivar, Beatriz Joven-Ibáñez, Xavier Juanola, Claudia Urrego-Laurín, Nieves Martínez-Alberola, Teresa Ruiz-Jimeno