1. Department of Community Medicine and Human Resource Development, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
2. Department of Anesthesiology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
3. Department of Dental Anesthesiology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
4. Department of Anesthesiology, Seirei Mikatahara General Hospital, Shizuoka, Japan
5. Department of Cardiovascular Surgery, Shikoku Central Hospital of the Mutual Aid Association of Public School Teachers, Ehime, Japan