Cedar branch Masaaki *1, Naomi Shinkawa *2, Great Mitsuaki Seto *3, Yumi Tokutake *4, Taku Yamaguchi *5, Miho Akiyama *6, Osamu Nishio *6
*1 Shizuoka environmental hygiene science laboratory, *2 Kagoshima environmental health center, *3 Ehime Prefectural hygiene environmental laboratory, *4 Nagano Res. Inst. for Health and Pollution, Association of examination for *5 Japan frozen food, *6 National Institute of Infectious Diseases
Clinical Virology 32(3): 189-194, 2004.