Affiliation: | 1. Tierarztpraxis Voelkendorf, Villach, Austria;2. Department for Pathobiology, Institute of Virology, University of Veterinary Medicine, Vienna, Austria;3. Tierarztpraxis Häbich; Wien, Austria;4. Department for Pathobiology, Institute of Pathology and Forensic Veterinary Medicine, University of Veterinary Medicine, Vienna, Austria |