International spondyloarthritis interobserver reliability exercise - The INSPIRE study: I. Assessment of spinal measures

D D Gladman, R D Inman, R J Cook, D van der Heijde, R B M Landewe, J Braun, J C Davis, P Mease, J Brandt, R B Vargas, V Chandran, P Helliwell, A Kavanaugh, F D O'Shea, M A Khan, N Pipitone, P Rahman, J D Reveille, M A Stone, W TaylorD J Veale, W P Maksymowych