1. Faculty of Medicine, Department of Orthopaedic Surgery, The University of Tokyo, Tokyo, Japan;
2. Faculty of Medicine, Department of Medical Research and Management for Musculoskeletal Pain, 22nd Century Medical & Research Center, The University of Tokyo, Tokyo, Japan;
3. Clinical Research Center for Allergy and Rheumatology, Sagamihara Hospital, National Hospital Organization, Sagamihara, Japan