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Porter, W.H.; Rutter, P.W.; Yao, H.H., Simultaneous determination of ethylene glycol and glycolic acid in serum by gas chromatography-mass spectrometry, J. Anal. Toxicol., 1999, 23, 7, 591-597, https://doi.org/10.1093/jat/23.7.591 . [all data]