1. Department of Computer Science & Information Engineering, Asia University, Taichung 41354, Taiwan
2. Department of Information System, University of Bengkulu, Bengkulu 38122, Indonesia
3. Department of Information Management, National Taichung University of Science and Technology, Taichung 41354, Taiwan
4. Department of Information Management, Lunghwa University of Science and Technology, Taoyuan 33306, Taiwan
5. Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404333, Taiwan