1. Laboratory of Clinical Microbiology, Kyoritsu Shoji Corporation, 1-12-4 Kudankita, Chiyoda-Ku, Tokyo 102-0073, Japan
2. Tukuba Central Laboratories, Kyoritsu Shoji Corporation, 2-9-22 Takamihara, Kukizaki, Inashiki, Ibaraki 300-1252, Japan
3. Laboratory of Veterinary Microbiology, Department of Veterinary Medicine, Faculty of Agriculture, Kagoshima University, 1-12-24 Korimoto, Kagoshima 890-0065, Japan