1. Division of Infectious Animal Disease Research, National Institute of Animal Health, National Agriculture and Food Research Organization, Ibaraki, Japan
2. Miyagi Prefecture Sendai Livestock Hygiene Service Center, Miyagi, Japan
3. Research Center for Advanced Analysis, National Agriculture and Food Research Organization, Ibaraki, Japan
4. Genome Breeding Support Office, Institute of Crop Science, National Agriculture and Food Research Organization, Ibaraki, Japan
5. The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan