Advancing research paradigms and pathophysiological pathways in psoriatic arthritis and ankylosing spondylitis: Proceedings of the 2017 Platform for the Exchange of Expertise and R... per Abraham, S, Barton, A, Eder, L, Lim, A, McGonagle, D, McHugh, N, Pennington, S, Sengupta, R, Siebert, S, Bowness, P, Schafer, P, Cullen, E, Fitzgerald, O