Arthritis

• Joseph Abdalla Nommesen El-Sahoury — Odense C, Region Syddanmark, Denmark

• CHU de Clermont-Ferrand — Clermont-Ferrand, Auvergne, France

• Xiangya Hospital of Central South University — Changsha, Hunan, China

• Northern Orthopaedic Division, Clinic Farsø, Aalborg University Hospital — Farsø, Northern Jutland, Denmark

• Royal Cornwall Hospitals NHS Trust — Truro, Cornwall, United Kingdom
• Brighton & Sussex University Hospitals NHS Trust — Brighton, United Kingdom
• North Bristol NHS Trust — Bristol, United Kingdom
• Cardiff and Vale Orthopaedic Centre — Cardiff, United Kingdom

• Dept. of Orthopaedic Surgery, Copenhagen University Hospital Hvidovre — Hvidovre, Denmark
• Sahlgrenska University Hospital, Department of Orthopedics, — Gothenburg, Sweden

• Central Finland Central Hospital — Jyväskylä, Finland
• Oulu University Hospital — Oulu, Finland
• Turku University Hospital — Turku, Finland

Not specified

• St. Helena Hospital Coon Joint Replacement Institute — St. Helena, California, United States