DOI:
10.1055/s-00000058
Planta Medica
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References
Taylor JA, Weber WJ, Standish LJ, Quinn HC, Goesling J, McGann M, Calabrese C.
Efficacy and safety of Echinacea in treating upper respiratory tract infections in children: a randomized controlled trial.
JAMA 2003;
290: 2824-2830
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