1. Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado, USA
2. Biological Dosimetry Model Laboratory, Section of Applied Radiation Biology and Radiotherapy, Division of Human Health, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
3. Wake Forest School of Medicine, Department of Pathology, Section on Comparative Medicine, Winston-Salem, NC, USA
4. Wake Forest School of Medicine, Department of Radiation Oncology, Winston-Salem, NC, USA