*Department of Radiation Oncology and Department of Cancer Biology

‡Department of Biostatistics

†School of Medicine, Vanderbilt University Medical Center, Nashville, TN

The data sets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

A.N.K.: conception and design. A.N.K.: development of methodology. A.W. and A.P.H.D.: acquisition of data: A.W., A.P.H.D., A.N.K., D.L., and W.G.: analysis and interpretation of data. A.W., A.P.H.D., and A.N.K.: writing, review, and/or revision of the manuscript. A.W., A.P.H.D., and A.N.K.: administrative, technical, or material support. A.N.K.: study supervision.

The authors declare no conflicts of interest.

Correspondence: Austin Dove, MD, Department of Radiation Oncology, 2220 Pierce Avenue, PRB-B1003, Nashville, TN 37232. E-mail: [email protected].