E Collantes-Estevez

The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part I): classification of paper patients by expert opinion including uncertainty appraisal

M. Dougados, B. Dijkmans, I. Olivieri, 2009, Annals of the rheumatic diseases.

The development of Assessment of SpondyloArthritis international Society classification criteria for axial spondyloarthritis (part II): validation and final selection

M. Dougados, D. M. van der Heijde, R. Landewé, 2009, Annals of the rheumatic diseases.