1. Research Group Oncology (RGO), Clinical Unit of Equine Surgery, Department for Companion Animals and Horses, Veterinary University, 1210 Vienna, Austria
2. Division of Molecular Oncology and Haematology, Karl Landsteiner University of Health Sciences, 3500 Krems an der Donau, Austria
3. Laboratory of Viral Oncology (LVO), Department of Dermatology, Medical University, 1090 Vienna, Austria