1. Department of Information Engineering and Computer Science, Feng Chia University, Taichung 407, Taiwan
2. Graduate Institute of Business and Management, Chang Gung University, Taoyuan 333, Taiwan
3. Department of Information Management, Chang Gung University, Taoyuan 333, Taiwan
4. Healthy Aging Research Center, Chang Gung University, Taoyuan 333, Taiwan
5. Department of Visual Communication Design, Ming-Chi University of Technology, New Taipei City 243, Taiwan
6. Department of Nursing, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
7. i. School, Feng Chia University, Taichung 407, Taiwan
8. Information Security Office, Office of Information Technology, Feng Chia University, Taichung 407, Taiwan