1. Department of Immunology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
2. Department of Emergency and Critical Care Medicine, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, Japan
3. Department of Molecular Anti-Virus Immunology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
4. Central Research Institute, ITO EN, Ltd., Shizuoka 421-0516, Japan