1. Department of Orthopaedic Surgery, Orthopaedic and Rheumatologic Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
2. Department of Medicine for Orthopaedics and Motor Organs, Juntendo University Graduate School of Medicine, Tokyo, Japan
3. Department of Orthopaedics, Faculty of Medicine, Juntendo University, Tokyo, Japan
4. Chefarzt Zentrum für Orthopädie und Unfallchirurgie, HELIOS Kliniken Berlin-Buch, Berlin, Germany
5. Department of Orthopaedics, Royal Hobart Hospital, Hobart, TAS, Australia
6. Department of Orthopaedics, Calvary Hospital, Hobart, TAS, Australia