Measurable definitions of ankylosing spondylitis management recommendations are needed for use in observational studies

Affiliations

• ¹ Sorbonne Universités, UPMC Université Paris 06, GRC08, Pierre-Louis Institute of Epidemiology and Public Health, 75013 Paris, France; University of British Columbia, Vancouver, Canada. Electronic address: [email protected].
• ² Sorbonne Universités, UPMC Université Paris 06, GRC08, Pierre-Louis Institute of Epidemiology and Public Health, 75013 Paris, France; Rheumatology Dept, Pitié-Salpétrière University Hospital, AP-HP, 75013 Paris, France.
• ³ Rheumatology Dept, Ste-Marguerite University Hospital, AP-HM, 13008 Marseille, France.
• ⁴ Faculty of Medicine, University Paris Diderot, Paris 7, 75010 Paris, France; Rheumatology Dept, Lariboisiere University Hospital, AP-HP, 75010 Paris, France.
• ⁵ Rheumatology B Dept, Cochin University Hospital, AP-HP, 75014 Paris, France; Faculty of Medicine, University Paris Descartes, Paris 6, 75006 Paris, France; EULAR Center of Excellence, 75005 Paris, France; INSERM (U1153), Clinical Epidemiology and Biostatistics, PRES Sorbonne Paris-Cité, Paris, France.
• ⁶ University of British Columbia, Vancouver, Canada.