Affiliation: | 1. Division of Pediatric Neurosurgery, Seoul National University Children’s Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Republic of Korea 2. Adolescent Cancer Center, Seoul National University Cancer Hospital, Seoul, Republic of Korea 3. Department of Pathology, Seoul National University Hospital, Seoul, Republic of Korea 4. Department of Pediatrics, Seoul National University Children’s Hospital, Seoul, Republic of Korea 5. Department of Radiation Oncology, Seoul National University Hospital, Seoul, Republic of Korea 6. The Armed Forces Capital Hospital, Seongnam, Gyeonggi-do, Republic of Korea
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