1. Department of Radiation Oncology (Lora-Michiels), Duke University Medical Center, Durham, North Carolina 27710; the
2. Department of Veterinary Clinical Sciences (Biller, Olsen, Hoskinson), College of Veterinary Medicine, Kansas State University, Manhattan, Kansas 66506; the
3. Department of Radiological Health Sciences (Kraft), College of Veterinary Medicine, Colorado State University, Fort Collins, Colorado 80523; and the
4. Department of Veterinary Clinical Sciences (Jones), Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Duck Pond Drive, Blacksburg, Virginia 24061-0442
5. From the