1. Department of Veterinary Clinical Sciences, Veterinary Medical CenterThe Ohio State University Columbus Ohio
2. Department of OncologyMSPCA‐Angell Animal Medical Center Boston Massachusetts
3. Department of Surgical Sciences, School of Veterinary MedicineUniversity of Wisconsin‐Madison Madison Wisconsin
4. Animal Cancer Centre, Ontario Veterinary CollegeUniversity of Guelph Guelph Ontario Canada
5. Massey University School of Veterinary Science Palmerston North New Zealand
6. Department of Surgical and Radiological Sciences, School of Veterinary MedicineUniversity of California‐Davis Davis California