DOI:
10.1055/s-00000101
Zeitschrift für Phytotherapie
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References
Pfrunder A, Schiesser M, Gerber S, Haschke M, Bitzer J, Drewe J..
Interaction of St John's wort with low-dose oral contraceptive therapy: a randomized controlled trial.
Br J Clin Pharmacol 2003; 56: 683-690
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