1. Department of Neurosurgery, The Second Affiliated Hospital Dalian Medical University Dalian China
2. Institute of Cancer Stem Cell, College of Basic Medical Science Dalian Medical University Dalian China
3. Department of Gastroendoscopy the Fourth Affiliated Hospital of China Medical University Shenyang China
4. Department of Neurosurgery, The Shenzhen Luohu Hospital Group The Third Affiliated Hospital of Shenzhen University Shenzhen China
5. Neurosurgery Department of School of Medicine The Chinese University of Hong Kong Shenzhen China