1. Department of Chemical Engineering; National Tsing Hua University; Hsinchu Taiwan
2. Institute of Preventive Medicine; National Defense Medical Center; Taipei Taiwan
3. Department of Life Science; National Taiwan Normal University; Taipei Taiwan
4. Department of Pathology; Tri-Service General Hospital; National Defense Medical Center; Taipei Taiwan
5. Department of Veterinary Medicine; College of Veterinary Medicine; National Chung Hsing University; Taichung Taiwan
6. Center for Research; Diagnostics and Vaccine Development; Centers for Disease Control; Taipei Taiwan