1. Department of Physiology, Division of Integrative Physiology, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan;
2. Department of Neurosurgery, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan;
3. Department of Surgery, Division of Cardiac Surgery, University of Maryland School of Medicine, Baltimore, Maryland;
4. Department of Psychiatry, Imamura-bunin Hospital, Kagoshima, Kagoshima, Japan;
5. Department of Surgery, Jichi Medical University School of Medicine, Shimotsuke, Tochigi, Japan;
6. First Department of Medicine, Saitama Medical Center, Jichi Medical University, Saitama, Saitama, Japan; and
7. Department of Developmental Physiology, Division of Adaptation Development, National Institute for Physiological Sciences, Okazaki, Aichi, Japan