The November 20, 2014, article by Ladra et al, entitled “Preliminary Results of a Phase II Trial of Proton Radiotherapy for Pediatric Rhabdomyosarcoma” (J Clin Oncol 32: 3762–3770, 2014), contained an error. The following acknowledgement of support was inadvertently omitted: “Supported by Grant No. P01CA021239 from the National Cancer Institute (NCI), National Institutes of Health.”
The online version has been corrected in departure from the print.