Author's Organization:Department of Veterinary Surgery I, School of Veterinary Medicine, Rakuno Gakuen University Department of Veterinary Surgery I, School of Veterinary Medicine, Rakuno Gakuen University
Published: June 15, 1991Received: July 27, 1990Available on J-STAGE: February 15, 2008Accepted: March 15, 1991
Advance online publication: -
Revised: -