Knee Osteoarthritis

• the First Affiliated Hospital of Anhui University of Chinese Medicine — Hefei, Anhui, China
• The Taihe County Hospital of Chinese Medicine — Taihe Chengguanzhen, Anhui, China
• The Tianchang City Hospital of Chinese Medicine — Tianchang, Anhui, China

• Therms Antonio Carlos — Poços de Caldas, Minas Gerais, Brazil

• Department of Orthopedics, Lillebaelt Hospital — Kolding, Southern Denmark, Denmark
• Department of Orthopedics and Traumatology, Odense University Hospital — Odense, Southern Denmark, Denmark
• Department of Orthopedics and Traumatology, Odense University Hospital — Svendborg, Southern Denmark, Denmark
• Department of Orthopedics, Lillebaelt Hospital — Vejle, Southern Denmark, Denmark

• Citadelle Hospital — Liège, Belgium

Not specified

• Penn State Milton S. Hershey Medical Center — Hershey, Pennsylvania, United States

• University of Pittsburh Arthritis Research Center — Pittsburgh, Pennsylvania, United States

Not specified

• Aarhus University Hospital — Aarhus, Denmark

• Northwestern University — Chicago, Illinois, United States