Cycling versus swapping strategies in psoriatic arthritis: results from the rheumatic diseases Portuguese register

Guimarães F; Ferreira M; Soares C; Parente H; Matos CO; Costa R; Oliveira D; Abreu C; Teixeira R; Azevedo S; Dias JM; Araújo F; Ferreira CC; Santos FC; Fontes T; Faria M; Silva L; Chícharo A; Nero P; Santos H; Sepriano A; Santos-Faria D; Tavares-Costa J;