Department of Neurosurgery The Second Affiliated Hospital of Harbin Medical University 246 Xuefu Road Nangang Harbin 150086 Heilongjiang Province China;
Department of Neurology The Second Affiliated Hospital of Harbin Medical University Harbin 150081 Heilongjiang Province China;
Department of Neurosurgery The Second Affiliated Hospital of Harbin Medical University 246 Xuefu Road Nangang Harbin 150086 Heilongjiang Province China;