1. Department of Neurosurgery, Beijing Aerospace General Hospital, Beijing, China (mainland)
2. Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, China (mainland)
3. Department of Neurosurgery, Second People’s Hospital of Tibet Autonomous Region, Lhasa, Tibet Autonomous Region, China (mainland)
4. Department of Interventional Neuroradiology, Beijing Neurosurgical Institute and Beijing Tiantan Hospital, Capital Medical University, Beijing, China (mainland)