*Department of Radiation Oncology, University of Cincinnati, Cincinnati, OH

§Cincinnati VA Medical Center, Cincinnati, OH

†Department of Radiation Oncology, MD Anderson Cancer Center, Houston, TX

‡Department of Radiation Oncology, Centre Hospitalier de l’Université de Montréal, Montréal, Québec, Canada

A.F. was supported by the ASTRO-AstraZeneca Radiation Oncology Research Training Fellowship. V.T. was supported in part by Career Development Award IK2 BX004360 from the United States Department of Veterans Affairs Biomedical Laboratory Research and Development Service and the Dr. Bernard S. Aron Fund. The remaining authors declare no conflicts of interest.

Correspondence: Vinita Takiar, MD, PhD, Associate Professor and Vice Chair of Research, Department of Radiation Oncology, University of Cincinnati Barrett Cancer Center, 234 Goodman Street, ML 0757, Cincinnati, OH 45267-0757. E-mail: [email protected].