1. Department of Internal Medicine Unnan City Hospital Unnan‐City Japan
2. Department of Orthopedics Unnan City Hospital Unnan‐City Japan
3. Department of Neuropsychiatry Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Science Okayama-City Japan
4. Department of Neurosurgery Shimane University Faculty of Medicine Izumo-City Japan
5. Division of Virology Shimane Prefectural Institute of Public Health and Environmental Science Matsue‐City Japan
6. Department of General Medicine Shimane Prefectural Central Hospital Izumo‐city Japan