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1: Hiroshima J Med Sci. 1976 Sep;25(2-3):135-40.Links

On the tryptophan-serotonin metabolism in manic-depressive disorders. Changes in plasma 5-HT and 5-HIAA levels and urinary 5-HIAA excretion following oral loading of L-5HTP in patients with depression.

PMID: 1088369 [PubMed - indexed for MEDLINE]