1. Department of Anaesthesia, Kyushu Koseinenkin Hospital, Kitakyushu, Japan
2. Department of Anaesthesia, Kyushu Koseinenkin Hospital, Kitakyushu, Japan.
3. Department of Anaesthesiology and Critical Care Medicine, Faculty of Medicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo.
4. Department of Anaesthesiology, Iwate Medical University, Morioka, Japan.
5. Department of Anaesthesiology and Acute Medicine, Aichi Medical University, Aichi-ken, Japan.