^○Masataka Fukuoka¹, Kiyoko Amou², Ichiro Kuki¹, Risako Ishioka³, Kohei Matsubara¹, Naoki Yamada¹, Takeshi Inoue¹, Megumi Nukui^1,3, Hideo Okuno², Junichi Ishikawa², Yasuyoshi Otsuka⁴, Shin Okazaki^1,3 (1.Department of Pediatric neurology, Osaka city general hospital, Osaka, Japan, 2.Department of Pediatric emergency, Osaka city general hospital, Osaka, Japan, 3.Department of Pediatric linguistics, Osaka city general hospital, Osaka, Japan, 4.Intensive care department, Osaka city general hospital, Osaka, Japan)

^○Maki Hamamoto¹, Yuka Hattori¹, Satoshi Onishi^1,2, Aya Imaide¹, Shingo Ishimori¹, Yo Okizuka^1,2 (1.Department of Pediatrics, Takatsuki General Hospital, Takatsuki, Japan, 2.Department of PICU, Takatsuki General Hospital, Takatsuki, Japan)

^○Satoko Kameda^1,2, Hayato Yamana^1,3, Yusuke Sasabuchi⁴, Nobuaki Michihata⁵, Hideo Yasunaga³, Takahide Kohro¹ (1.Data Science Center, Jichi Medical University, Shimotsuke, Japan, 2.Department of Pediatrics, Shin-Oyama City Hospital, Oyama, Japan, 3.Department of Clinical Epidemiology and Health Economics, School of Public Health, The University of Tokyo, Tokyo, Japan, 4.Department of Real-world Evidence, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan, 5.Cancer Prevention Center, Chiba Cancer Center Research Institute, Chiba, Japan)

^○Azusa Oba¹, Atsuko Oba², Sumire Seki¹, Yoshimi Fujita¹, Yuka Okawa¹, Yurika Toga¹, Yoichi Takemasa¹, Ryo Matsuoka¹, Noriko Takahata¹ (1.Department of Pediatrics, The Jikei University Katsushika Medical Center, 2.Department of Pediatrics, The Jikei University School of Medicine)

^○Kentaro Marutani¹, Yuji Ueno¹, Saori Kawakami¹, Ryoji Taira¹, Satoshi Akamine¹, Michiko Torio¹, Sagano Onoyama², Kenji Furuno³, Tomoko Abe⁴, Yoshiki Kawamura⁵, Tetsushi Yoshikawa⁵, Ryutaro Kira¹ (1.Department of Pediatric Neurology, Fukuoka Children's Hospital, Fukuoka, Japan., 2.Department of Pediatric Infection and Immunology, Fukuoka Children's Hospital, Fukuoka, Japan., 3.Department of General Pediatrics & Interdisciplinary Medicine, Fukuoka Children's Hospital, Fukuoka, Japan., 4.Department of Clinical Laboratory, Fukuoka Children's Hospital, Fukuoka, Japan., 5.Department of Pediatrics, Fujita Health University School of Medicine, Aichi, Japan.)

^○Fumitaka Kohno¹, Takeshi Matsushige¹, Naota Hannoe¹, Yusuke Okada¹, Yasunori Iida¹, Fumiko Okazaki¹, Ken Fukuda¹, Yoshiki Kawamura², Hiroki Miura², Tetsushi Yoshikawa², Shunji Hasegawa¹ (1.Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Ube, Japan, 2.Department of Pediatrics, Fujita Health University, School of Medicine, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 47-1192, Japan)