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Keilholz U, Goldin-Lang P, Bechrakis NE, Max N, Letsch A, Schmittel A, Scheibenbogen C, Heufelder K, Eggermont A, Thiel E.Keilholz U, et al. Among authors: heufelder k.Clin Cancer Res. 2004 Mar 1;10(5):1605-12. doi: 10.1158/1078-0432.ccr-0610-3.Clin Cancer Res. 2004.PMID: 15014010