1. Laboratory of Acute Respiratory Viral Diseases and Cytokines; Department of Virology III; National Institute of Infectious Diseases; Musashimurayama Japan
2. Department of Pediatrics; Japanese Red Cross Medical Center; Shibuya-ku Japan
3. Laboratory of Virology and Viral Infections; Faculty of Veterinary Medicine; Nippon Veterinary and Life Science University; Musashino Japan