Content and face validity and feasibility of 5 candidate instruments for psoriatic arthritis randomized controlled trials: The PsA OMERACT Core Set Workshop at the GRAPPA 2017 Annual Meeting (Journal of Rheumatology, 2018)

(untitled) - Holland, R; Tillett, W; Ogdie, A; Leung, Y; Gladman, D; Callis Duffin, K; Coates, L; Mease, P; Eder, L; Strand, V; Elmamoun, M; Højgaard, P; et al.