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Kraus-Tiefenbacher U, Sfintizky A, Welzel G, Simeonova A, Sperk E, Siebenlist K, Mai S, Wenz F.Kraus-Tiefenbacher U, et al. Among authors: siebenlist k.Radiat Oncol. 2012 Dec 18;7:217. doi: 10.1186/1748-717X-7-217.Radiat Oncol. 2012.PMID: 23249653Free PMC article.