-
Tomoko HIGASHIHARA
-
Hisao IZAWA
-
Misao ONUMA
-
Hiroshi KODAMA
-
Takeshi MIKAMI
-
Hiroshi NODA
-
Author's Organization:Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University Laboratory of Animal Health, College of Dairying