1 Department of Anesthesiology, Showa University Koto Toyosu Hospital, 5-1-38, Toyosu, Koto-ku, Tokyo, 135-8577, Japan. tksuzuki@med.showa-u.ac.jp.
2 Department of Anesthesiology, Showa University Koto Toyosu Hospital, 5-1-38, Toyosu, Koto-ku, Tokyo, 135-8577, Japan.
3 Department of Anesthesiology, Showa University Fujigaoka Hospital, 1-30, Fujigaoka, Aoba-ku, Yokohama, 227-8501, Japan.
4 Division of Anesthesiology, Department of Perioperative Medicine, Showa University School of Dentistry, 2-1-1, Kitasenzoku, Ohta-ku, Tokyo, 145-8515, Japan.