1. Engineering Research Center of Health Service System Based on Ubiquitous Wireless Networks, Ministry of Education, College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
2. King Abdullah II School of Information Technology, University of Jordan, Amman, Jordan
3. College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
4. Department of Management Information Systems, National Pingtung University of Science and Technology, Pingtung, Taiwan
5. Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan