Degenerative Lesion of Articular Cartilage of Knee

• Physicians Research Group — Tempe, Arizona, United States
• Horizon Clinical Research — La Mesa, California, United States
• Ochsner Sports Medicine Institute — New Orleans, Louisiana, United States
• Hackensack University Medical Center — Hackensack, New Jersey, United States

Not specified

• University Hospital Basel — Basel, Switzerland

• Andrea Mocci — Bari, Italy
• Raul Zini — Cotignola, Ravenna, Italy
• Maurizio Bellettato — Faenza, Ravenna, Italy
• Luisangelo Sordo — Torino, Italy

• Middle East Technical University, Medical Center and Physical Education and Sports Dep. — Ankara, Cankaya, Turkey (Türkiye)