1. Department of Electronic Engineering, Chang Gung University, Taoyuan 33302, Taiwan
2. Department of Ph.D. Program, Prospective Technology of Electrical Engineering and Computer Science, National Chin-Yi University of Technology, Taichung 411030, Taiwan
3. Department of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Linkou 333, Taiwan
4. Department of Public Health, Chang Gung University, Taoyuan 33302, Taiwan