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: April 15, 1990Received: December 27, 1988Available on J-STAGE: February 14, 2008Accepted: November 21, 1989
Advance online publication: -
Revised: -