1. Graduate Institute of Biomedical Sciences and Department of Biochemistry and Molecular Biology, College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
2. Research Center for Emerging Viral Infections, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
3. Department of Medical Research, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
4. Research Center for Industry of Human Ecology and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan