1. Department of Endocrinology and Metabolism, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Japan
2. Department of Radiology, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Japan
3. Department of Neurosurgery, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Japan
4. Department of Neurology, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Japan