1. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, People's Republic of China
2. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
3. Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education; School of Medical Information Engineering, Gannan Medical University, Ganzhou 341000, People's Republic of China