1. Oncology Service, Department of Clinical Sciences and Services; Royal Veterinary College; Hertfordshire UK
2. Department of Pathology and Pathogen Biology; Royal Veterinary College; Hertfordshire UK
3. Institute for Animal Health, Veterinary School; Universidad de Las Palmas de Gran Canaria; Arucas Spain
4. Veterinary Medical Centre of Central New York; New York USA
5. Davies Veterinary Specialists; Hitchin UK
6. Tierklinik Hofheim; Hofheim Germany
7. Clinica Veterinaria Nerviano; Nerviano MI Italy
8. Department of Veterinary Science; University of Turin; Turin Italy
9. University of Glasgow School of Veterinary Medicine Glasgow; Glasgow UK
10. Universidad Complutense de Madrid Facultad de Veterinaria Madrid; Madrid Spain