Jianrui Sun1, Lin Wang2. 1. Department of Neurosurgery, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou, 450052, Henan, China. jianruisun2@163.com. 2. Information Department, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.