Exploring the quality of communication between patients with psoriatic arthritis and physicians: results of a global online survey od Coates, L, Azevedo, VF, Cappelleri, JC, Moser, J, Eder, L, Richette, P, Weng, M-Y, Silva, RQ, Garg, A, Majjhoo, A, Griffiths, CEM, Young, P, Howland, S