DOI: 10.1055/s-00000058

Planta Medica

References

Goel V, Lovlin R, Barton R, Lyon MR, Bauer R, Lee TDG, Basu TK.
Efficacy of a standardized echinacea preparation (Echinilin) for the treatment of the common cold: a randomized, double-blind, placebo-controlled trial.

J Clin Pharm Ther 2004;
29: 75-83

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