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Sewekow E, Kessler LC, Seidel-Morgenstern A, Rothkötter HJ.Sewekow E, et al. Among authors: rothkotter hj.BMC Biotechnol. 2008 Mar 11;8:27. doi: 10.1186/1472-6750-8-27.BMC Biotechnol. 2008.PMID: 18334018Free PMC article.