1. Department of Endocrinology and Metabolism, Uonuma Kikan Hospital, Minami-Uonuma, Niigata, Japan
2. Department of Internal Medicine, Niigata Prefectural Tokamachi Hospital, Tokamachi, Niigata, Japan
3. Department of Respiratory Medicine, Uonuma Kikan Hospital, Minami-Uonuma, Niigata, Japan
4. Department of Neurology, Uonuma Kikan Hospital, Minami-Uonuma, Niigata, Japan
5. Department of Neurosurgery, Uonuma Kikan Hospital, Minami-Uonuma, Niigata, Japan