1. Department of Anesthesiology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
2. Department of Oral and Maxillofacial Surgery, Yamagata Prefectural Central Hospital, Yamagata City, Yamagata, Japan
3. Department of Oral and Maxillofacial Implantology, Kanagawa Dental University Hospital, Yokosuka, Kanagawa, Japan
4. Department of Anesthesiology and Perioperative Medicine, Tohoku University Hospital, Sendai, Miyagi, Japan