Clinical characteristics of importance to outcome in patients with axial spondyloarthritis: protocol for a prospective descriptive and exploratory cohort study
Rikke Asmussen Andreasen, Lars Erik Kristensen, Torkell Ellingsen, Robin Christensen, Xenofon Baraliakos, Jimmi Wied, Claus Aalykke, Thomas Ulstrup, Berit Schiøttz-Christensen, Hans Christian Horn, Amir Emamifar, Bent Duerlund, Lars Fischer, Inger Marie Jensen Hansen
BMJ Open Jul 2017, 7 (7) e015536; DOI: 10.1136/bmjopen-2016-015536