Author's Organization:Department of Veterinary Microbiology, Rakuno Gakuen University Department of Veterinary Microbiology, Rakuno Gakuen University Department of Veterinary Internal Medicine, Rakuno Gakuen University Department of Veterinary Microbiology, Rakuno Gakuen University Department of Epizootiology, Faculty of Veterinary Medicine, Hokkaido University
Published: February 15, 1991Received: March 02, 1990Available on J-STAGE: February 15, 2008Accepted: October 12, 1990
Advance online publication: -
Revised: -