1. Department of Pediatric Critical Care Medicine, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka-City, Osaka, 534-0021, Japan
2. Department of Pediatric Critical Care Medicine, Hyogo Prefectural Kobe Children’s Hospital, 1-6-7, Minatojimaminatomachi, Chuo-ku, Kobe-City, Hyogo, 650-0047, Japan
3. Nursing Department, Intensive Care Center, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka-City, Osaka, 534-0021, Japan
4. Nursing Department, Pediatric Intensive Care Unit, Hyogo Prefectural Kobe Children’s Hospital, 1-6-7, Minatojimaminatomachi, Chuo-ku, Kobe-City, Hyogo, 650-0047, Japan
5. Nursing Department, Osaka Women’s and Children’s Hospital, 840, Murodo-cho, Izumi-City, Osaka, 594-1101, Japan
6. Department of Anesthesiology, Japanese Red Cross Kyoto Daiichi Hospital, 15-749, Honmachi, Higashiyama-ku, Kyoto, 605-0981, Japan
7. Department of Intensive Care Medicine, Osaka Women’s and Children’s Hospital, 840, Murodo-cho, Izumi-City, Osaka, 594-1101, Japan