CLassification of Axial SpondyloarthritiS Inception Cohort

Columbia University, New York

James J. Peters VAMC, The Bronx

University of Mississippi Medical Center, Jackson

Cleveland Clinic, Cleveland

Centro de Estudios de Investigacion Basica y Clinica, SC, Guadalajara

Dallas VA Medical Center VANTHCS, Dallas

University of Texas Health Science Center at Houston, Houston

University of Colorado, Aurora

VA Long Beach Healthcare System, Long Beach

UCSF Medical Center - Rheumatology Clinic, San Francisco

Sacramento VA Medical Center, Mather

Oregon Health & Science University, Portland

Seattle Rheumatology Associates, Seattle

Yale University School of Medicine, New Haven

Brigham & Women's Hospital, Boston

Boston University School of Medicine, Boston

Artus Health Center, Vancouver

The Ottawa Hospital, Ottawa

University Health Network, Toronto

CLIDITER, Mexico City