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Schwertner HA, Valtier S, Bebarta VS.Schwertner HA, et al. Among authors: bebarta vs.J Chromatogr B Analyt Technol Biomed Life Sci. 2012 Sep 15;905:10-6. doi: 10.1016/j.jchromb.2012.07.012. Epub 2012 Aug 9.J Chromatogr B Analyt Technol Biomed Life Sci. 2012.PMID: 22939270