1. Instructor, Department of Anesthesiology, Keio University School of Medicine. Chief Anesthesiologist, Department of Anesthesiology, Kitasato Institute Hospital.
2. Instructor.
3. Chief Anesthesiologist, Department of Anesthesiology, Kitasato Institute Hospital.
4. Professor, Department of Anesthesiology, Keio University School of Medicine.
5. Assistant Professor, Department of Physiology, Teikyo University School of Medicine. Current position: Professor, Department of Physiology, Faculty of Health Sciences, Uekusa Gakuen University, Chiba, Japan.