1 Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan. sentoy@med.nagoya-cu.ac.jp.
2 Department of Anesthesia and Intensive Care, National Center for Child Health and Development, Tokyo, Japan.
3 Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, Nagoya, Aichi, Japan.