1. Department of Computer Science and Information Engineering, Chang Gung University, Kweishan, Taoyuan 33378, Taiwan
2. Department of General Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan
3. Department of Computer Science, National Chiao Tung University, HsinChu 30010, Taiwan
4. Department of Electrical Engineering, National University of Tainan, Tainan, Taiwan
5. Research Center for Information Technology Innovation, Academia Sinica, Taipei 11574, Taiwan