Jun Noguchi, Yuki Arakawa, Torataro Takaki, Masahiro Sugawa, Masato Yanagi, Kiyotaka Isobe, Makiko Mori, Katsuyoshi Koh (Division of Hematology/Oncology, Saitama Children’s Medical Center, Saitama, Japan)

Shiho Nishimura, Keita Tomioka, Maiko Shimomura, Yoko Mizoguchi, Shinobu Sasaki, Masao Kobayashi (Department of Pediatrics, Hiroshima University, Hiroshima, Japan)

Chiai Nagae¹, Youtarou Umezawa², Mika Mori², Akina Matsuoka¹, Tomoko Ashikaga¹, Ryo Oyama¹, Dai Keino¹, Atsuki Yamashita¹, Tetsuya Mori¹, Masashi Taki² (1.Department of Pediatrics, St. Marianna University School of Medicin, Kawasaki, Japan, 2.Department of Pediatrics, St. Marianna University School of Medicin, Yokohama City Seibu Hospital, Yokohama, Japan)

Masataka Ito^1,2, Hiroshi Yagasaki¹, Erina Nakahara^1,2, Tomokuni Yoshihashi², Masahiro Misawa², Ichiro Morioka¹ (1.Pediatrics, Nihon University, Tokyo, Japan, 2.Pediatrics, Tokyo Metropolitan Bokutoh Hospital, Tokyo, Japan)

Ryo Maemura, Daiki Yamashita, Daichi Sajiki, Ayako Yamamori, Hirotoshi Sakaguchi, Nao Yoshida, Asahito Hama (Department of Hematology Oncology, Children’s Medical Center, Japanese Red Cross Nagoya First Hospital, Nagoya, Japan)

Akira Ishiguro¹, Shinji Kunishima², Yoji Sasahara³, Osamu Ohara⁴, Kenichi Imadome⁵, Kenichiro Hata⁵, Tadashi Kaname⁵, Yoichi Matsubara⁵, Platelet Committee⁶ (1.Center for Postgraduate Education and Training, National Center for Child Health and Development, Tokyo, Japan, 2.Department of Medical Technology, Gifu University of Medical Science, Gifu, Japan, 3.Department of Pediatrics, Tohoku University School of Medicine, Sendai, Japan, 4.Kazusa DNA Research Institute, Kisarazu, Japan, 5.Research Institute, National Center for Child Health and Development, Tokyo, Japan, 6.Japanese Society of Pediatric Hematology/Oncology, Japan)

Yoji Sasahara¹, Shinji Kunishima², Masue Imaizumi³, Yukihiro Takahashi⁴, Akira Ishiguro⁵, Platelet Committee⁶ (1.Department of Pediatrics, Tohoku University Graduate School of Medicine, Miyagi, Japan, 2.Department of Medical Technology, School of Health Science, Gifu University of Medical Science, Gifu, Japan, 3.Department of Hematology and Oncology, Miyagi Children’s Hospital, Miyagi, Japan, 4.Nara Red Cross Blood Center, Nara, Japan, 5.Department of Hematology, National Center for Child Health and Development, Tokyo, Japan, 6.Platelet Committee, Japanese Society of Pediatric Hematology and Oncology, Japan)