1. Department of Neurosurgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
2. Department of Pharmacy, Dalian Medical University, Dalian, China
3. Department of Physiology, Dalian Medical University, Dalian, China
4. Department of Neurosurgery, The Third Peoples Hospital of Dalian, Non-Directly Affiliated Hospital of Dalian Medical University, Dalian, China