1. Department of Information Management, Chang Gung University, Taoyuan 333, Taiwan;
2. Department of Nursing, Chang Gung Memorial Hospital, Taoyuan Branch, Taoyuan 333, Taiwan;
3. Department of Information Management, National Central University, Zhongli 320, Taiwan;
4. Operations and Decision Technologies Department, Kelley School of Business, Indiana University, Bloomington, Indiana 47405;
5. Graduate Institute of Management, Chang Gung University, Taoyuan 333, Taiwan;
6. Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan 333, Taiwan;
7. Department of Business and Management, Ming Chi University of Technology, Taishan 243, Taiwan