^○Mariko Kasai¹, Hiroshi Sakuma¹, Jun-ichi Takanashi² (1.Department of Brain and Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan, 2.Department of Pediatrics and Pediatric Neurology, Tokyo Women's Medical University Yachiyo Medical Center, Chiba, Japan)

^○Yoshiki Kawamura (Department of Pediatrics, Fujita Health University Okazaki Medical Center, Okazaki, Japan)

^○Ryutaro Kira (Department of Pediatric Neurology, Fukuoka Children's Hospital, Fukuoka, Japan)

^○Keiko Tanaka-Taya (Kanagawa Prefectural Institute of Public Health, Kanagawa, Japan)