1. Graduate Institute of Microbiology and Public Health National Chung Hsing University Taichung Taiwan
2. WHO Collaborating Centre for Reference and Research on Influenza VIDRL Peter Doherty Institute for Infection and Immunity University of Melbourne Australia
3. Graduate Institute of Biotechnology National Chung Hsing University Taichung Taiwan
4. Department of Veterinary Medicine National Chung Hsing University Taichung Taiwan