1. Department of Orthopaedic Surgery University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
2. Department of Orthopaedics The Second Xiangya Hospital Central South University Changsha Hunan PR China
3. Department of Bioengineering University of Pittsburgh Swanson School of Engineering Pittsburgh Pennsylvania USA
4. Osteoarthritis and Musculoskeleton Research Unit, Faculty of Medicine Chulalongkorn University, King Chulalongkorn Memorial Hospital, Thai Red Cross Society Bangkok Thailand
5. Department of Pathology University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA
6. McGowan Institute for Regenerative Medicine University of Pittsburgh School of Medicine Pittsburgh Pennsylvania USA