Naoyuki Shibukawa, Aika Takanashi, Junya Take, Naoto Nishimura, Fumi Hirose, Yumi Ogura, Hajime Wakamatsu, Shigeaki Nonoyama, Hiroyuki Kawaguchi (Department of Pediatrics, National Defense Medical College, Saitama, Japan)

Naoya Yamasaki¹, Kyoko Kajihara², Hiromi Nakagawa², Michiya Yokozaki³, Teruhisa Fujii¹ (1.Division of Blood Transfusion., Hiroshima University Hospital., Hiroshima, Japan, 2.Division of Clinical Support., Hiroshima University Hospital., Hiroshima, Japan, 3.Division of Cinical Laboratory., Hiroshima University Hospital., Hiroshima, Japan)

Yuri Uchiyama^1,2, Yoshiyuki Ogawa², Kunio Yanagisawa², Takeshi Mizuguchi¹, Taeko Kaburagi³, Haruna Okuno³, Hideki Uchiumi⁴, Hiroshi Handa², Naomichi Matsumoto¹ (1.Hum. Gent., Yokohama City Univ., Yokohama, Japan, 2.Hematol., Gunma Univ. hosp., Maebashi, Japan, 3.Ped., Gunma Univ. hosp., Maebashi, Japan, 4.Shirane Clinic, Numata, Japan)

Natsuki Shimabukuro, Sachie Uchibori, Sakiko Kitamura, Shouhei Tomori, Taeko Hanashiro, Iori Tedokon, Keita Tamaki, Kazuho Morichika, Yukiko Nishi, Sawako Nakachi, Satoko Morishima, Hiroaki Masuzaki (Second Department of Internal Medicine, Ryukyus Univ., Okinawa, Japan)

Takamitsu Matsushima¹, Yoko Matsuo², Yu Yagi¹, Makoto Ohyama¹, Junichi Kiyasu¹, Yuji Yufu¹ (1.Hematol, Iizuka Hospital, Fukuoka, Japan, 2.Pediatrics, Iizuka Hospital, Fukuoka, Japan)

Miyuki Ookura¹, Naoko Hosono¹, Syoko Furukawa², Keiji Nogami², Yusuke Yamamoto³, Akihiko Matsumine³, Masamune Kidoguchi⁴, Kenichirou Kikuta⁴, Takanori Ueda¹, Takahiro Yamauchi¹ (1.Department of Hematology and Oncology, University of Fukui, Fukui, Japan, 2.Department of Pediatrics, Nara Medical University, Nara, Japan, 3.Department of Orthopedics, University of Fukui, Fukui, Japan, 4.Department of Neurosurgery, University of Fukui, Fukui, Japan)

Tomoko Ashikaga¹, Chiai Nagae¹, Akina Matsuoka¹, Mika Mori², Youtarou Umezawa², Atsuki Yamashita¹, Noriko Suzuki³, Satoshi Yamazaki³, Shigenobu Takayama⁴, Masashi Taki² (1.Pediatrics, St. Marianna university school of medicine, Kanagawa, Japan, 2.Pediatrics, St. Marianna university Yokohama Seibu hospital, Kanagawa, Japan, 3.Clinical laboratory, St. Marianna university school of medicine, Kanagawa, Japan, 4.Faculity of health science, Daito Bunka University, Tokyo, Japan)

Moeko Hino, Reona Okada, Koji Chikaraishi, Tomoko Okunushi, Naoki Shimojo (Department of pediatrics, Graduate school of medicine, Chiba university)