Higher prevalence of psoriatic arthritis in the adult population in Spain? A population-based cross-sectional study. oleh Antonio Romero Pérez, Rubén Queiro, Daniel Seoane-Mato, Eduard Graell, Eugenio Chamizo, Lara Chaves Chaparro, Sara Rojas Herrera, Jordi Pons Dolset, Miguel A Polo Ostáriz, Susana Ruiz-Alejos Garrido, Cristina Macía-Villa, Ana Cruz-Valenciano, María L González Gómez, Carlos Sánchez-Piedra, Federico Díaz-González, Sagrario Bustabad-Reyes, Proyecto EPISER2016 Working Group