1. Division of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan Town, Miaoli County 350, Taiwan, ROC
2. Department of Biochemistry
3. Department of Chemistry, National Tsing Hua University, 101, Section 2, Kuang Fu Road, Hsinchu 300, Taiwan, ROC
4. Department of Medical Biotechnology and Laboratory Science
5. Research Center for Emerging Viral Infections
6. Department of Biological Science and Technology, National Chiao Tung University, 1001 University Road, Hsinchu 300, Taiwan, ROC
7. Department of Chemistry, Chung Yuan Christian University, 200 Chung-Pei Road, Chungli 320, Taiwan, ROC