1. Henan University People’s Hospital, Henan Provincial People’s Hospital
2. School of Clinical Medicine, Henan University, Henan Provincial People’s Hospital
3. Zhenzhou University People’s Hospital, Henan Provincial People’s Hospital
4. Department of Neurosurgery, Henan Provincial People’s Hospital
5. Department of Neurosurgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University
6. Department of Neurosurgery, Henan Provincial People’s Hospital, Henan University People’s Hospital, Zhengzhou University People’s Hospital, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou, China