1. Centro Specialistico Veterinario, Oncology service Milan Lombardy Italy
2. Willows Veterinary Centre and Referral Service, Oncology service Solihull West Midlands UK
3. Clinica Veterinaria Malpensa, Oncology service Samarate Lombardy Italy
4. Royal Veterinary College Queen Mother Hospital for Animals, Oncology service Hatfield Hertfordshire UK