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Lefevere, M.F.; Verhaeghe, B.J.; Declerck, D.M.; de Leenheer, A.P., Automated profiling of urinary organic acids by dual-column gas chromatography and gas chromatography/mass spectrometry, Biomed. Environ. Mass Spectrom., 1988, 15, 6, 311-322, https://doi.org/10.1002/bms.1200150603 . [all data]