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"Short-term effects of 2,4,5-trihydroxyamphetamine, 2,4,5-trihydroxymethamphetamine and 3,4-dihydroxymethamphetamine on central tryptophan hydroxyls activity". J Pharmacol Exp Ther265 (2): 813–818. 1993. பப்மெட்:8496826.