1. Department of Small Animal Clinical Sciences,1
2. Department of Pathobiology,2 and
3. Department of Pathology,3 University of Florida, Gainesville, Florida 32610-0126, and
4. Klinik fuer kleine Haustiere Tieraerztliche Hochschule, Hannover,4
5. Staatliches Veterinaruntersuchungsamt, Detmold,5 and
6. Institute for Avian and Reptile Medicine, Justus Liebig University, Giessen,6 Germany