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Blank E, Kraus-Tiefenbacher U, Welzel G, Keller A, Bohrer M, Sütterlin M, Wenz F.Blank E, et al. Among authors: welzel g.Ann Surg Oncol. 2010 Oct;17 Suppl 3:352-8. doi: 10.1245/s10434-010-1265-z. Epub 2010 Sep 19.Ann Surg Oncol. 2010.PMID: 20853058Clinical Trial.