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Flavonoids were quantified using peak areas of A 280nm , A 500nm or selective ion monitoring in positive mode with external calibration curves prepared in the same solvent as the samples
Prevalence and prognostic significance of vitamin C deficiency in patients with acute upper gastrointestinal bleeding: a prospective cohort study
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BertoglioKJillJames SDepreyLBruleNHendrenRL
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