1. Neurosurgery Unit, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
2. Institute of Biological and Medical Engineering, Guangdong Academy of Sciences, Guangzhou 510500, China
3. Guangdong Key Lab of Medical Electronic Instruments and Polymer Material Products, Guangdong Institute of Medical Instruments, Guangzhou 510500, China
4. National Engineering Research Center for Healthcare Devices, Guangzhou 510500, China
5. Foshan Polytechnic, Foshan City, Guangdong Province 528000, China