Lorenzin, M., A. Ortolan, P. Frallonardo, S. Vio, C. Lacognata, F. Oliviero, L. Punzi, and R. Ramonda. “Spine and Sacroiliac Joints on Magnetic Resonance Imaging in Patients With Early Axial Spondyloarthritis: Prevalence of Lesions and Association With Clinical and Disease Activity Indices from the Italian Group of the SPACE Study”. Reumatismo, Vol. 68, no. 2, Sept. 2016, pp. 72-82, doi:10.4081/reumatismo.2016.885.