Spondylarthropathies

• Tucson Orthopaedic Research Center — Tucson, Arizona, United States
• University of Arizona — Tucson, Arizona, United States
• California Pacific Medical Center — San Francisco, California, United States
• Illinois Bone & Joint Institute, Ltd. — Glenview, Illinois, United States

• CHU Brugmann - Site Horta — Brussels, Bruxelles-capitale, Région de, Belgium
• ASZ Aalst — Aalst, Belgium
• Algemeen Stedelijk Ziekenhuis — Aalst, Belgium
• Onze Lieve Vrouw Ziekenhuis Aalst — Aalst, Belgium

• Reade — Amsterdam, North Holland, Netherlands
• Academic Medical Center/University of Amsterdam — Amsterdam, North Holland, Netherlands

Not specified

• University of South Florida — Tampa, Florida, United States
• Louisiana State University — New Orleans, Louisiana, United States
• University of Toronto — Toronto, Ontario, Canada

• Ana- Maria Orbai — Baltimore, Maryland, United States
• Husni — Cleveland, Ohio, United States
• Smolen — Vienna, Austria
• Palominos — Porto Alegre, Brazil

Not specified

• Imanova Centre for Imaging Sciences — London, Greater London, United Kingdom
• Nuffield Orthopaedic Centre — Oxford, Oxfordshire, United Kingdom

Not specified

• Dokuz Eylul University School of Physical Therapy and Rehabilitation — Izmir, Turkey (Türkiye)