Submitted for Publication: May 30, 2013; final revision received September 14, 2013; accepted September 30, 2013.
Published Online: November 21, 2013. doi:10.1001/jamaoto.2013.5754.
Study concept and design: Spiotto.
Acquisition of data: Spiotto, Abundo, Jefferson.
Analysis and interpretation of data: Ranck, Kolokythas, Wenig, Weichselbaum, Spiotto.
Drafting of manuscript: Ranck, Abundo, Weichselbaum, Spiotto.
Critical revision of the manuscript for important intellectual content: Ranck, Jefferson, Kolokythas, Wenig, Weichselbaum, Spiotto.
Statistical analysis: Ranck, Spiotto.
Administrative, technical, and material support: Abundo, Wenig, Weichselbaum, Spiotto.
Study supervision: Weichselbaum, Spiotto.
Conflict of Interest Disclosures: None reported.
Funding/Support: This study is supported by a grant from the Fanoni Anemia Research Foundation (Dr Spiotto) and the Burroughs Wellcome Career Award for Medical Scientists (Dr Spiotto).
Role of the Sponsor: The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Previous Presentation: This study was presented at the Annual Meeting for the American Society for Therapeutic Radiation Oncology; September 23, 2013; Atlanta, GA.