1. Mie Chuo Livestock Hygiene Service Center, 1742–1 Ishinden-Kozubeta, Tsu, Mie 514–0061, Japan
2. Mie Nansei Livestock Hygiene Service Center, 83–2 Hayamasechou, Matsusaka, Mie 515–0217, Japan
3. National Institute of Animal Health, 3–1–5 Kannondai, Tsukuba, Ibaraki 305–0856, Japan