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Voit CA, van Akkooi AC, Eggermont AM, Schäfer-Hesterberg G, Kron M, Ulrich J, Sterry W, Schoengen A, Rademaker J.Voit CA, et al.J Natl Cancer Inst. 2011 Dec 7;103(23):1771-7. doi: 10.1093/jnci/djr381. Epub 2011 Sep 21.J Natl Cancer Inst. 2011.PMID: 21940673