1. Department of Stress and Bio-response Medicine, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan.
2. Advanced Medical Emergency and Critical Care Centre, Yamaguchi University Hospital, Yamaguchi, Japan
3. Department of Neurological Surgery, Kagawa University Faculty of Medicine, Kagawa, Japan.
4. Division of Emergency and Critical Care Medicine, Department of Acute Medicine, Nihon University School of Medicine, Tokyo, Japan.
5. School of Integrated Health Sciences, Faculty of Medicine, University of Tokyo, Tokyo, Japan.