DOI: 10.1055/s-00000058

Planta Medica

References

Goel V, Lovlin R, Barton R, Lyon MR, Bauer R, Lee TDG. et al.
Efficacy of a standardized Echinacea preparation (EchinilinTM) 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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