1. Departments of Infectious Diseases
2. Pathology, St. Jude Children's Research Hospital
3. Joint Influenza Research Center (Shantou University Medical College and Hong Kong University), Shantou University Medical College, Shantou, Guangdong
4. Department of Virology, National Institute of Veterinary Research, Ministry of Agriculture and Rural Development
5. Virology Department, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
6. Department of Microbiology, Sriraj Hospital
7. Department of Livestock Development, National Institute of Animal Health, Bangkok, Thailand
8. Government Virus Unit, Department of Health, Hong Kong, Special Administrative Region, People's Republic of China
9. Department of Pathology, University of Tennessee, Memphis, Tennessee