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Somuramasami J, Kenttämaa HI.Somuramasami J, et al. Among authors: kenttamaa hi.J Am Soc Mass Spectrom. 2007 Mar;18(3):525-40. doi: 10.1016/j.jasms.2006.10.009. Epub 2006 Dec 6.J Am Soc Mass Spectrom. 2007.PMID: 17157527Free PMC article.