Spondylarthropathies

• Research Site — Huntsville, Alabama, United States
• Research Site — Peoria, Arizona, United States
• Research Site — Phoenix, Arizona, United States
• Research Site — Santa Maria, California, United States

• ULB Hopital Erasme, Service de Rheumatology — Brussels, Belgium
• Eurohospital — Plovdiv, Bulgaria
• UMHAT Kaspela EOOD — Plovdiv, Bulgaria
• Medical Center "Teodora", EOOD — Rousse, Bulgaria

• Martina Hansens Hospital AS — Bærum, Norway
• Diakonhjemmet Hospital AS — Oslo, Norway
• University Hospital of North Norway — Tromsø, Norway
• University of Gotenburg — Gothenburg, Sweden

• 961 — Birmingham, Alabama, United States
• 953 — Tuscaloosa, Alabama, United States
• 954 — Peoria, Arizona, United States
• 971 — Scottsdale, Arizona, United States

• Prince of Wales Hospital — Hong Kong, China

Not specified

• Rheumatology Department, the Third Affiliated Hospital of Sun Yat-sen University — Guangzhou, Guangdong, China

• Academic Medical Center — Amsterdam, Netherlands
• Ziekenhuis Bernhoven — Uden, Netherlands

Not specified

• ULB Hopital Erasme, Service de Rheumatology — Brussels, Belgium
• UMHAT "Kaspela", EOOD — Plovdiv, Bulgaria
• MHAT - Ruse, AD — Rousse, Bulgaria
• UMHAT "SofiaMed", OOD, Block 1 — Sofia, Bulgaria