1. Department of Computer and Information Science, University of Macau, Taipa, Macau, China
2. First Affiliated Hospital of Guangzhou University of TCM, Guangzhou, Guangdong, China
3. School of Computer Science and Engineering, University of New South Wales, Sydney, NSW, Australia
4. Department of Information Technology, Techno India College of Technology, Kolkata, West Bengal, India
5. Department of Information Technology, Durban University of Technology, Durban, South Africa
6. Faculty of Mathematics and Computer Science, Quanzhou Normal University, Quanzhou, Fujian, China