1 Department of Radiation Oncology, The James Cancer Hospital and Solove Research Institute, Ohio State University Wexner Medical Center, Columbus, Ohio.
2 Department of Radiation Oncology, Sidney Kimmel Cancer Center at Thomas Jefferson University, Philadelphia, Pennsylvania; DO/MBA Program, Philadelphia College of Osteopathic Medicine, Philadelphia, Pennsylvania.
3 Department of Radiation Oncology, University of Louisville School of Medicine, Louisville, Kentucky.
4 Division of Biostatistics, Department of Pharmacology & Experimental Therapeutics, Thomas Jefferson University, Philadelphia, Pennsylvania.
5 Department of Radiation Oncology, Sidney Kimmel Cancer Center at Thomas Jefferson University, Philadelphia, Pennsylvania.