1. School of Information Science and Engineering, Lanzhou University, Lanzhou, China
2. Industry and Technology Service Center, Shantou National High-Tech Industrial Development Zone, Shantou, China
3. School of Medical Technology, Beijing Institute of Technology, Beijing, China
4. Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, Hong Kong
5. Second Clinical Medical College, Jinan University, Shenzhen, China
6. College of Computer Science and Software Engineering, Shenzhen University, Shenzhen, China