1. Department of Mechatronics Engineering, National Changhua University of Education, Changhua, Taiwan
2. Department of Computer Science and Information Engineering, Chaoyang University of Technology, Taichung, Taiwan
3. Department of Health Care Administration, Chang Jung Christian University, Tainan, Taiwan
4. Department of Information and Communication Engineering, Chaoyang University of Technology, Taichung, Taiwan
5. Department of Electrical Engineering, National Chung Hsing University, Taichung, Taiwan
6. Shenzhen Graduate School, Harbin Institute of Technology, HIT Campus of Shenzhen University Town, Shenzhen, Guangdong, China