1. School of Information Science and Engineering, Shandong University, Qingdao, China
2. School of Software, Shandong University, Jinan, China
3. Department of Special Examination, Shandong Provincial Third Hospital, Jinan, China
4. Department of Cardiology, Qilu Hospital of Shandong University, Jinan, China
5. School of Engineering, Macquarie University, Sydney, NSW, Australia