1. Instructor, Department of Anesthesiology, Shimane Medical University.
2. Assistant Professor, Department of Anesthesiology, Shimane Medical University.
3. Research Associate, Department of Anesthesiology, Shimane Medical University.
4. Associate Professor, Department of Anesthesiology, Yale University School of Medicine.
5. Professor and Chairman, Department of Anesthesiology, Shimane Medical University.