1. Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC, USA
2. Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington DC, USA
3. Consumer and Clinical Radiation Protection Bureau, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Canada
4. Radiation Epidemiology Branch, National Cancer Institute, Bethesda, MD, USA
5. Department of Radiation Oncology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
6. Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
7. Radiation Safety Research Center, Nuclear Technology Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), Tokyo, Japan