Affiliation: | 1.Department of Orthopaedic Surgery and Spinal Surgery, The University of Tokyo Hospital, 7–3–1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan ;2.Department of Orthopedic Surgery, Yokohama Rosai Hospital, 3211 Kozukue-Chō, Kōhoku-Ku, Yokohama, Kanagawa, 222-0036, Japan ;3.Department of Spine and Orthopedic Surgery, Japanese Red Cross Medical Center, 4-1-22 Hiroo, Shibuya-ku, Tokyo, 150-8935, Japan ;4.Department of Spine Surgery, Japan Community Health-care Organization Tokyo Shinjuku Medical Center, 5-1, Tsukudo-cho, Shinjuku-ku, Tokyo, 162-8453, Japan ;5.Department of Orthopedic Surgery, Kanto Rosai Hospital, 1-1 Kizukisumiyoshi-cho, Nakahara-ku, Kawasaki, Kanagawa, 211-8510, Japan ;6.Department of Hygiene, Public Health and Preventive Medicine, Showa University School of Medicine, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan ;7.Department of Medical Research and Management for Musculoskeletal Pain, 22nd Century Medical and Research Center, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan ; |