1. School of Management, Shenzhen University, Shenzhen, China
2. School of Computer Science and Informatics, Cardiff University, Cardiff, U.K.
3. School of Computer Science and Technology, Guangdong University of Technology, Guangzhou, China
4. School of Computer Science and Cyber Engineering, Guangzhou University, Guangzhou, China
5. School of Biomedical Engineering, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound and the Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen University Medical School, Shenzhen University, Shenzhen, China