^○Akiyo Yamamoto, Yasushi Yoshikawa, Kentaro Kawamura, Shinobu Fukumura (The Department of Pediatrics, Sapporo Medical University School of Medisine, Sapporo, Japan)

^○Yui Takada^1,2, Hiroyuki Torisu^1,3,4, Yasunari Sakai¹, Satoshi Akamine¹, Michiko Torio¹, Yoshito Ishizaki¹, Masafumi Sanefuji¹, Momoko Sasatsuki¹, Pediatric Immunoreactive Enchephalitis Reserch Group, Japan⁴, Toshiro Hara⁴, Hidetoshi Takada¹, Shoichi Ohga¹ (1.Faculty of Medicine,Kyushu University,Fukuoka,Japan, 2.Japanese Red Cross Fukuoka Hospital, Fukuoka, Japan, 3.Section of Pediatrics, Department of Medicine, Fukuoka Dental College, 4.Japan pediatric immunoreactive encephalitis reserch group)

^○Kiyohiro Kim, Hisashi Kawawaki, Masataka Fukuoka, Takeshi Inoue, Megumi Nukui, Ichiro Kuki, Shin Okazaki (Department of Pediatric Neurology, Osaka City General Hospital, Japan)

^○Jun Kubota^1,2, Shin-ichiro Hamano¹, Satoru Ikemoto³, Ryuki Matsuura¹, Erika Hiwatari¹, Atsuko Oba², Reiko Koichihara³, Motoyuki Minamitani¹ (1.Division of Neurology, Saitama Children's Medical Center, Saitama, Japan, 2.Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan, 3.Department for Child Health and Human Development, Saitama Children's Medical Center, Saitama, Japan)

^○Tomoya Ishida¹, Hroyuki Shirai^1,2, Taira Toki², Yutaka Nonoda², Toshiyuki Iwasaki², Masato Nonoyama³, Masahiro Ishii² (1.Department of pediatrics,Sagamidai Hospital, Kanagawa, Japan, 2.Department of pediatrics, Kitasato University School of medicine, Kanagawa, Japan, 3.Nonno Kids clinc, Kanagawa, Japan)

^○Takashi Ichiyama, Yusuke Okada, Naoko Ishikawa, Hironori Matsufuji, Hiroshi Isumi, Yoshitugu Sugio (Department of Pediatrics, Tsudumigaura Medical Center for Children with Disabilities, Yamaguchi, Japan)