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- [3] Simultaneous determination of methionine and total homocysteine in human plasma by gas chromatography-mass spectrometry JOURNAL OF CHROMATOGRAPHY B, 2001, 758 (02): : 283 - 288
- [4] Optimization and performance of a rapid gas chromatography-mass spectrometry analysis for methylmalonic acid determination in serum and plasma JOURNAL OF CHROMATOGRAPHY B, 2000, 741 (02): : 231 - 241