Authors
Hiromichi Ohtsuka
School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
Honami Hirose
Federation of Agricultural Mutual Relief Association, Bekkai, Japan
Kenji Murakami
Federation of Agricultural Mutual Relief Association, Fukagawa, Japan
Ryo Murata
School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
Toshihide Kato
School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan
Motoshi Tajima
School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Japan