1. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 70803, USA
2. Department of Environmental Health Sciences, Fay W. Boozman College of Public Health, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
3. Division of Radiation Health, Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
4. Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
5. Department of Radiation Oncology, Wake Forest School of Medicine, Winston-Salem, NC 27101, USA
6. School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, NY 14642, USA
7. Department of Preventive Medicine and Population Health, University of Texas Medical Branch, Galveston, TX 77555, USA
8. Outer Space Institute, University of British Columbia, Vancouver, BC V6T 1Z4, Canada