Affiliation: | 1. Department of Orthopaedic Surgery, University of Occupational and Environmental Health, Kitakyushu, Japan 2. Medical Work-Life Balance Center, Nagasaki University Hospital, Nagasaki, Japan 3. Department of Radiological Technology, Kawasaki College of Allied Health Professions, Kurashiki, Japan 4. Tsurukami Clinic of Orthopaedic and Rheumatology Hospital, Kumamoto, Japan 5. Ken-Ai Memorial Hospital, Onga, Japan 6. Kitakyushu General Hospital, Kitakyushu, Japan 7. Department of Obstetrics and Gynecology, Hirosaki University School of Medicine, Hirosaki, Japan 8. Taisho Pharmaceutical Co. Ltd, Tokyo, Japan 9. Chugai Pharmaceutical Co. Ltd, Tokyo, Japan 10. National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjyuku-ku, Tokyo, 162-8655, Japan
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