1. Department of Orthopaedic Surgery, Hospital for Special Surgery Weill Cornell Medicine New York New York USA
2. Department of Orthopaedic Surgery and Traumatology Charité University Hospital Berlin Berlin Germany
3. Department of Orthopedic Surgery Showa University School of Medicine Tokyo Japan
4. Department of Orthopaedic Surgery and Traumatology University Hospital Düsseldorf Düsseldorf Germany
5. Department of Radiology and Imaging, Hospital for Special Surgery Weill Cornell Medicine New York New York USA