1 Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA.
2 Mathematics Department, Auburn University at Montgomery, Alabama, USA.
3 University of Maryland School of Medicine, Baltimore, MD, USA.
4 Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, MD, USA.
5 Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, USA.
6 Department of Otorhinolaryngology-Head and Neck Surgery, Marlene & Stewart Greenebaum Comprehensive Cancer Center, University of Maryland Medical Center, Baltimore, MD, USA.
7 Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, USA.
8 Department of Radiation Oncology, University of Maryland School of Medicine, Baltimore, MD, USA. lren@som.umaryland.edu.