1. Division of Virology, Department of Infectious Diseases, St. Jude Children's Research Hospital, 332 N. Lauderdale St., Memphis, Tennessee 38105
2. College of Medicine and Medical Research Institute, Chungbuk National University, 12, Gaeshin-Dong Heungduk-Ku, Cheongju 361-763, Republic of Korea
3. Department of Virology, National Institute of Veterinary Research, Ministry of Agriculture and Rural Development, Hanoi, Vietnam
4. Division of Project Research, Creative Research Initiative, Hokkaido University, Kita 21, Nishi 10, Kita-ku, Sapporo 001-0021, Japan
5. Department of Microbiology, Sriraj Hospital, Bangkok 10700, Thailand
6. Department of Livestock Development, National Institute of Animal Health, Bangkok 10900, Thailand
7. Virology Department, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam
8. Department of Microbiology, Queen Mary Hospital, University of Hong Kong, Hong Kong Special Administrative Region, People's Republic of China