A patient-derived and patient-reported outcome measure for assessing psoriatic arthritis: elaboration and preliminary validation of the Psoriatic Arthritis Impact of Disease (PsAID) questionnaire, a 13-country EULAR initiative

Authors: Laure Gossec, Maarten de Wit, Uta Kiltz, Jürgen Braun, Umut Kalyoncu, Rossana Scrivo, Mara Maccarone, Laurence Carton, Kati Otsa, Imre Sooäär, Turid Heiberg, Heidi Bertheussen, Juan D. Cañete, Anselm Sánchez Lombarte, Andra Bălănescu, Alina Dinte, Kurt de Vlam, Josef S Smolen, Tanja Stamm, Dora Niedermayer, Gábor Békés, Douglas J. Veale, Philip Helliwell, Andrew Parkinson, Thomas A. Luger, Tore K. Kvien - Annals of the Rheumatic Diseases 2014 cited by 421