1. Medical Physics Program, Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA, USA
2. Department of Radiation Oncology, Mary Bird Perkins Cancer Center, Baton Rouge, LA, USA
3. Department of Pathobiological Science, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
4. Department of Experimental Statistics, Louisiana State University, Baton Rouge, LA, USA
5. Department of Comparative Biomedical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, USA
6. Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA