1. Research Institute, Hospital for Special Surgery New York New York USA
2. Department of Orthopedic Surgery Hospital for Special Surgery New York New York USA
3. Department of Joint Surgery The Third Hospital of Hebei Medical University Shijiazhuang People's Republic of China
4. Department of Orthopedics and Trauma Surgery Medical University of Vienna Vienna Austria
5. Department of Pathology and Laboratory Medicine Weill Cornell Medicine New York New York USA
6. Department of Orthopedic Surgery Weill Cornell Medicine New York New York USA