Osteoarthritis, Knee

• Pfizer Investigational Site — Bad Münder am Deister, Germany
• Pfizer Investigational Site — Beckum, Germany
• Pfizer Investigational Site — Berlin, Germany
• Pfizer Investigational Site — Berlin, Germany

• Brigham and Women's Faulkner Hospital — Boston, Massachusetts, United States

• University of Alabama at Birmingham — Birmingham, Alabama, United States
• University of Iowa — Iowa City, Iowa, United States
• Boston University School of Medicine — Boston, Massachusetts, United States

• Hacettepe University — Ankara, Samanpazari, Turkey (Türkiye)

• Sanos Clinic — Herlev, Denmark

• Faculty of Medicine, South valley University — Qina, Qena Governorate, Egypt

• Son Llatzer University Hospital — Palma, Balear Islands, Spain

• Krems Hospital — Krems, Austria
• Monica Hospitals — Antwerp, Belgium
• Rizzoli Orthopaedic Institute — Bologna, Italy
• Oslo University — Oslo, Norway

Not specified

• Pfizer Investigational Site — Montgomery, Alabama, United States
• Pfizer Investigational Site — Phoenix, Arizona, United States
• Pfizer Investigational Site — Tempe, Arizona, United States
• Pfizer Investigational Site — Buena Park, California, United States