1 Department of Anesthesiology, Osaka Prefectural Hospital Organization, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan. t-k-s-t@koto.kpu-m.ac.jp.
2 Department of Anesthesiology, Osaka Prefectural Hospital Organization, Osaka Women's and Children's Hospital, 840 Murodo-Cho, Izumi, Osaka, 594-1101, Japan.
3 Department of Critical Care Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibeshinmachi, Suita, Osaka, 564-8565, Japan.
4 Department of Emergency and Critical Care Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-3-2 Kagamiyama, Higashihiroshima, Hiroshima, 739-8511, Japan.