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Echinacea for treating the common cold: a randomized trial.
Barrett B, Brown R, Rakel D, Mundt M, Bone K, Barlow S, Ewers T. Barrett B, et al. Ann Intern Med. 2010 Dec 21;153(12):769-77. doi: 10.7326/0003-4819-153-12-201012210-00003. Ann Intern Med. 2010. PMID: 21173411 Free PMC article. Clinical Trial.
Placebo effects and the common cold: a randomized controlled trial.
Barrett B, Brown R, Rakel D, Rabago D, Marchand L, Scheder J, Mundt M, Thomas G, Barlow S. Barrett B, et al. Ann Fam Med. 2011 Jul-Aug;9(4):312-22. doi: 10.1370/afm.1250. Ann Fam Med. 2011. PMID: 21747102 Free PMC article. Clinical Trial.
35 results