1. College of Electronics and Information Engineering, Sichuan University, Chengdu, China;
2. Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China;
3. Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China;
4. College of Computer Science, Sichuan University, Chengdu, China;
5. Research Centre of Intelligent Healthcare, Faculty of Health and Life Science, Coventry University, Coventry, UK