1. Department of Farm Animal Health; Faculty of Veterinary Medicine; Utrecht University; Utrecht Utrecht The Netherlands
2. Division of Diagnostic Imaging; Department of Clinical Sciences of Companion Animals; Faculty of Veterinary Medicine; Utrecht University; Utrecht Utrecht The Netherlands
3. Department of Veterinary Clinical Sciences; Purdue University System; West Lafayette IN 47907
4. Department of Pathobiology; Faculty of Veterinary Medicine; Utrecht University; Utrecht Utrecht The Netherlands