Ankylosis

• The First Affiliated Hospital of Bengbu Medical College — Bengbu, Anhui, China
• The General Hospital of People's Liberation Army — Beijing, Beijing Municipality, China
• Zhongshan Hospital Fudan University — Shanghai, Shanghai Municipality, China
• Shanghai Guanghua Hospital — Shanghai, Shanghai Municipality, China

Not specified

• Centro Medico Privado de Reumatologia — San Miguel de Tucumán, Tucumán Province, Argentina
• Consultorios Reumatológicos Pampa — Buenos Aires, Argentina
• Universitair Ziekenhuis Gent — Ghent, Belgium
• Reuma Instituut — Hasselt, Belgium

Not specified

Not specified

• Sant Rafael Hospital — Barcelona, Spain
• Clinic I Provincial Hospital — Barcelona, Spain
• Bellvitge Hospital — Barcelona, Spain
• Parc Tauli Hospital — Sabadell, Barcelona, Spain

• Ålesund sykehus — Ålesund, Norway
• Bekkestua legesenter — Bekkestua, Norway
• Dr. Johannessen Kontor — Bergen, Norway
• Dr.Wiigs kontor — Bergen, Norway

• Ambroise Paré Hospital — Boulogne-Billancourt, Hauts-De-Seine, France

Not specified

Not specified