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Strano-Rossi S, Leone D, de la Torre X, Botrè F. The relevance of the urinary concentration of ephedrines in anti-doping analysis: determination of pseudoephedrine, cathine, and ephedrine after administration of over-the-counter medicaments. Ther Drug Monit. 2009 Aug;31(4):520–6. doi: 10.1097/ftd.0b013e3181ac6006. PMID: 19571776. |