*Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Stritch School of Medicine, Loyola University Chicago, Maywood

†Department of Radiation Oncology, Edward Hines Veteran Affairs Hospital, Chicago, IL

B.C., M.M.H.: design. B.C., J.H.L., L.S., B.P.V.: data collection and analysis. B.C., M.M.H., J.H.L. L.S., B.P.V., J.S.W.: written manuscript.

The authors declare no conflicts of interest.

Correspondence: Matthew M. Harkenrider, MD, Department of Radiation Oncology, Cardinal Bernardin Cancer Center, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, 60153. E-mail: [email protected].

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