1. College of Medicine and Medical Research Institute, Chungbuk National University, Cheongju 361-763, Korea
2. Viral Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea
3. College of Veterinary Medicine, Chungbuk National University, Cheongju 361-763, Korea
4. SKKU Advanced Institute of Technology and Department of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Korea
5. Department of Advanced Fermentation Fusion Science & Technology, Kookmin University, Seoul 136-702, Korea
6. BioLeaders Corporation, Yongsandong, Yuseong-gu, Daejeon 305-500, Korea
7. College of Veterinary Medicine, Chungnam National University, Daejeon 305-764, Korea
8. Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN 38105-3678, USA