Songping Zheng Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guo Xue Xiang Street, Chengdu, 610041, P. R. China.
Seidu A. Richard Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guo Xue Xiang Street, Chengdu, 610041, P. R. China.
Department of Medicine, Princefield University, P. O. Box MA 128, Ho-Volta Region, Ghana West Africa.
Yiyun Fu Department of Pathology, West China Hospital, Sichuan University, 37 GuoXue Xiang Street, Chengdu, 610041, P. R. China.
Yan Ju Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guo Xue Xiang Street, Chengdu, 610041, P. R. China.
Chao You Department of Neurosurgery, West China Hospital, Sichuan University, 37 Guo Xue Xiang Street, Chengdu, 610041, P. R. China.
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