Takumi Yamanaka¹, Yoshinobu Takahashi¹, Seisuke Tanigawa¹, Michiko Takado¹, Daisuke Umebayashi¹, Masataka Nanto¹, Kazunori Tatsuzawa¹, Hiroyasu Sasajima¹, Hajime Hosoi², Naoya Hashimoto¹ (1.Department of Neurosurgery, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan, 2.Department of Pediatrics, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan)

Akira Gomi¹, Tomomi Hayase², Yuta Kawahara², Akira Morimoto² (1.Department of Pediatric Neurosurgery, Jichi Children’s Medical Center Tochigi, Jichi Medical University, 2.Department of Pediatrics, Jichi Children’s Medical Center Tochigi, Jichi Medical University)

Fumiyuki Yamasaki¹, Yasuyuki Kinoshita¹, Takeshi Takayasu¹, Satoshi Usui¹, Motoki Takano¹, Ushio Yonezawa¹, Atsushi Tominaga³, Kazuhiko Sugiyama², Kaoru Kurisu¹ (1.Department of Neurosurgery, Hiroshima University Hospital, Hiroshima, Japan, 2.Department of Clinical Oncology & Neuro-oncology Program, Hiroshima University Hospital, Hiroshima, Japan, 3.Department of Neurosurgery, Hiroshima Prefectural Hospital, Hiroshima, Japan)

Tomonari Suzuki¹, Rena Mizuno¹, Eita Ucjoda¹, Junichi Adachi¹, Kazuhiko Mishima¹, Mitsuaki Shirahata¹, Takaaki Yanagisawa^1,2, Ryo Nishikawa¹ (1.Saitama Medical University International Medical Center, Hidaka, Japan, 2.Tokyo Jikei medical university, Department of neurosurgery)

Hideki Ogiwara, Kenichi Usami, Eitarou Ishisawa, Ako Matsuhashi (Department of Neurosurgery, National Center for Child Health and Development, Tokyo, Japan)

Kenichi Usami¹, Keita Terashima², Yui Kimura², Eitarou Ishisaka¹, Ako Matsuhashi¹, Hideki Ogiwara¹ (1.Division of Neurosurgery, National Center for Child Health and Development, Tokyo, Japan, 2.Division of Neuro-Oncology, Children’s Cancer Center, National Center for Child Health and Development, Tokyo, Japan)

Tadashi Miyagawa¹, Minami Sasaki², Hirosi Kikuchi², Mariko Yabuki², Yoshiyuki Watanabe², Koichi Tamaki², Hirohide Karasudani², Akira Yamaura² (1.Department of Pediatric Neurosurgery, Matsudo City General Hospital, Chiba, Japan, 2.Department of Neurosurgery, Matsudo City General Hospital, Chiba, Japan)