Otobo, T. M. Herregods, N. Jaremko, J. L. Lambert, R. G. and Sudol-Szopinska, I. Meyers, A. B. Kirkhus, E. Weiss, P. and Tse, S. M. Appenzeller, S. Conaghan, P. G. Rumsey, D. G. and Stimec, J. Jans, L. Van Rossum, M. Tzaribachev, N. and Carrino, J. Papakonstantinou, O. Tolend, M. Moineddin, R. and Haroon, N. Maksymowych, W. P. Doria, A. S. Outcome Measure Rheumatology, SACROILIAC JOINT MRI ABNORMALITIES IN JUVENILE SPONDYLOARTHRITIS: AN UPDATE OF DEFINITIONS AND SCORING OF THE OMERACT JUVENILE IDIOPATHIC ARTHRITIS MRI SCORE, Annals of the Rheumatic Diseases, (80), 943-944, 2021, BMJ Publishing Group, 0003-4967, 1468-2060