1. Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan, Shandong Province, P.R. China
2. Brain Science Research Institute, Shandong University, Jinan, Shandong Province, P.R. China
3. Institute of Basic Medical Sciences and Key Laboratory of Cardiovascular Proteomics of Shandong Province, P.R. China
4. Department of Biomedicine, University of Bergen, Bergen, Norway
5. Department of Neurosurgery, Dezhou People's Hospital, Dezhou, Shandong Province, P.R. China