1. Queen Mother Hospital for AnimalsRoyal Veterinary College, University of LondonNorth MymmsUK
2. Department of Pathobiology and Population Sciences, Royal Veterinary CollegeUniversity of LondonHatfieldUK
3. North Carolina State UniversityDepartment of Radiation Oncology1060 William Moore Drive, RaleighNC27606USA
4. Anderson Moores Veterinary SpecialistsThe Granary, Bunstead BarnsWinchesterUK
5. Department of Oncology, Hospital Veterinari GlòriesBarcelonaSpain