RT Journal Article SR Electronic T1 Correction: What is axial spondyloarthritis? A latent class and transition analysis in the SPACE and DESIR cohorts. A meta-analysis and functional study JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP e78 OP e78 DO 10.1136/annrheumdis-2019-216516corr1 VO 79 IS 6 YR 2020 UL http://ard.bmj.com/content/79/6/e78.abstract AB