1. State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing, Jiangsu, China
2. School of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China
3. School of Nursing, Hong Kong Polytechnic University, Hong Kong, China
4. Department of Computing and Decision Sciences, Lingnan University, Hong Kong, China
5. Department of Electrical, Computer and Biomedical Engineering, Ryerson University, Toronto, ON, Canada