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Ernst-Stecken A, Ganslandt O, Lambrecht U, Sauer R, Grabenbauer G.Ernst-Stecken A, et al. Among authors: sauer r.Radiother Oncol. 2006 Oct;81(1):18-24. doi: 10.1016/j.radonc.2006.08.024. Epub 2006 Sep 15.Radiother Oncol. 2006.PMID: 16978720Clinical Trial.