1. Department of Neurosurgery Tianjin Baodi Hospital, Baodi Clinical College of Tianjin Medical University Tianjin China
2. Department of Radiotherpy The First Affiliated Hospital of Zhengzhou University Zhengzhou Henan China
3. Department of Neurosurgery The First Hospital Attached to Baotou Medical College of Inner Mongolia University of Science & Technology Baotou Inner Mongolia China