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Simultaneous liquid chromatographic determination of norepinephrine, 3,4-dihydroxyphenylethyleneglycol, 3,4-dihydroxyphenylalanine and 3,4-dihydroxyphenylacetic acid in human plasma
Simultaneous liquid chromatographic determination of norepinephrine, 3,4-dihydroxyphenylethyleneglycol, 3,4-dihydroxyphenylalanine and 3,4-dihydroxyphenylacetic acid in human plasma