Author's Organization:Department of Veterinary Surgery II, School of Veterinary Medicine, Rakuno Gakuen University Department of Veterinary Surgery II, School of Veterinary Medicine, Rakuno Gakuen University Department of Veterinary Surgery II, School of Veterinary Medicine, Rakuno Gakuen University
Published: August 15, 1990Received: October 05, 1989Available on J-STAGE: February 14, 2008Accepted: March 15, 1990
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