^○Yuki Inami¹, Mutsumi Satou¹, Saoko Takeshita² (1.Department of Pediatrics, Odawara Municipal Hospital, Odawara, Japan, 2.Yokohama City University Medical Center, Yokohama, Japan)

^○Masahiro Ishii¹, Masayuki Shimono¹, Ryouta Igarashi¹, Yumeko Matsuda¹, Tomofumi Fukuda¹, Ayako Senju¹, Shiho Takano¹, Naoki Shiota², Koichi Kusuhara¹ (1.The Department of Pediatrics, University of Occupational Environmental Health, kitakyushu,Japan, 2.UBE Industries, LTD. Department of Health Care &Support Center, Environment, Ube-shi, Japan)

^○Yuko Numasawa, Momoko Yokoyama, Yuko Nakano, Atsushi Nishimura, Narumi Michihiro, Hiroaki Shiihara, Toshiaki Abe, Takao Harasawa (Ashikaganomori Ashikaga Hospital, Ashikaga City, Tochigi, Japan)

^○Makiko Kurosawa, Yuri Chikumaru, Kaori Kaneko, Kumiko Karasawa, Mitsuko Okuda, Yuka Masuda, Jiu Yuguchi, Hidee Arai, Atsuo Nezu (Yokohama Medical and Welfare Centre, Konan, Yokohama, Japan)

^○Mariko Yagi, Yoko Matsumoto, Mio Nishimura, Yoko Kawasaki (Department of Pediatirics, Nikoniko House Medical and Welfare Center, Kobe, Japan)