title: Justification for including MRI as a tool in the diagnosis of axial SpA.
authors.affiliation: Department of Rheumatology C1-R46, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands. d.vanderheijde@kpnplanet.nl
authors.forename: Désirée
authors.initials: D
authors.lastname: van der Heijde
authors.forename: Martin
authors.initials: M
authors.lastname: Rudwaleit
authors.forename: Robert B M
authors.initials: RB
authors.lastname: Landewé
authors.forename: Jochen
authors.initials: J
authors.lastname: Sieper