1 Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Clinical Discipline of Pediatric Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China.
2 Department of Pathology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China.
3 Department of Imaging, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China.