1. NHC Key Laboratory of Glycoconjuates Research Department of Biochemistry and Molecular Biology School of Basic Medical Sciences Fudan University Shanghai 200032 P. R. China
2. Department of Neurosurgery Shandong Provincial Hospital Affiliated to Shandong First Medical University Jinan Shandong 250021 P. R. China
3. Division of Neurosurgery Zhongshan Hospital Fudan University Shanghai 200032 P. R. China