1. Royal (Dick) School of Veterinary Studies and Roslin Institute, The University of Edinburgh, Roslin, UK
2. School of Veterinary Medicine, University College Dublin, Dublin, Ireland
3. Nutley Animal Hospital, Nutley, NJ, USA
4. Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
5. Department of Veterinary Medicine, University of Milan, Lodi, Italy
6. Department of Veterinary Medicine, Federal Rural University of Pernambuco, Recife, Brazil