1. Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, Xiamen 361004, P. R. China
2. Surgical Institute, First Affiliated Hospital of Xiamen University, Xiamen 361003, P. R. China
3. Department of Biomaterials, Research Center of Biomedical Engineering of Xiamen & The Higher Educational Key Laboratory for Biomedical Engineering of Fujian Province, College of Materials, Xiamen University, Xiamen 361005, P. R. China
4. Department of Neurosurgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510000, P. R. China