1. Division of Respiratory Medicine and Allergology, Department of Internal Medicine, Showa University School of Medicine
2. Showa university Dental hospital Medical Clinic
3. The Division of Anesthesiology, Department of Perioperative Medicine, Showa University School of Dentistry
4. Department of Anesthesiology, Showa University Northern Yokohama Hospital
5. Department of Oral and Maxillofacial Surgery, Showa University School of Dentistry