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Lenz C, Kühn-Hölsken E, Urlaub H.Lenz C, et al. Among authors: kuhn holsken e.J Am Soc Mass Spectrom. 2007 May;18(5):869-81. doi: 10.1016/j.jasms.2007.01.013. Epub 2007 Mar 8.J Am Soc Mass Spectrom. 2007.PMID: 17349801Free article.