Reduction in upper limb joint surgery among rheumatoid arthritis patients: An interrupted time-series analysis using Danish health care registers by Cordtz, R, Hawley, S, Prieto-Alhambra, D, Højgaard, P, Zobbe, K, Kristensen, LE, Overgaard, S, Odgaard, A, Soussi, BG, Dreyer, L