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Onnerfjord P, Eremin SA, Emnéus J, Marko-Varga G.Onnerfjord P, et al.J Chromatogr A. 1998 Mar 27;800(2):219-30. doi: 10.1016/s0021-9673(97)01159-x.J Chromatogr A. 1998.PMID: 9561764