title: Letter to the Editor.
authors.affiliation: Clinical Pathology, College of Veterinary Medicine, Biomedical & Diagnostic Sciences, University of Tennessee, Knoxville, TN.
authors.forename: M M
authors.initials: MM
authors.lastname: Fry
authors.affiliation: Clinical Pathology, College of Veterinary Medicine, Biomedical & Diagnostic Sciences, University of Tennessee, Knoxville, TN.
authors.forename: D
authors.initials: D
authors.lastname: Schaefer