1. Department of Rehabilitation, St. Luke’s International Hospital, Tokyo, Japan
2. Department of Orthopedic Surgery, Tokyo Medical and Dental University, Tokyo, Japan
3. Department of Orthopedic Surgery, St. Luke’s International Hospital, Tokyo, Japan
4. Graduate School of Public Health, St. Luke’s International University, Tokyo, Japan
5. Department of Physical and Occupational Therapy, Copenhagen University Hospital, Bispebjerg-Frederiksberg, and Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
6. Department of Orthopedic Surgery, Ina Hospital, Saitama, Japan