2 Department of Pediatric Hematology-Oncology, Dalian Municipal Women and Children's Medical Center, Dalian, China.
3 Department of Neurosurgery, SanBo Brain Hospital, Capital Medical University, Beijing, China.
4 Beijing Key Laboratory of Epilepsy, Beijing, China.
5 Center of Epilepsy, Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.
6 Center for Clinical Epidemiology and Evidence-based Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.