Comparison of two extraction procedures for urinary organic acids prior to gas chromatography—mass spectrometry
1992 ◽
Vol 577
(2)
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pp. 341-346
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1986 ◽
Vol 33
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pp. 251-256
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1988 ◽
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pp. 311-322
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2017 ◽
Vol 1049-1050
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pp. 8-15
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2003 ◽
Vol 783
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1999 ◽
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pp. 279-284
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1998 ◽
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2008 ◽
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1981 ◽
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pp. 1-19
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