We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleTreatment of the common cold with unrefined echinacea. A randomized, double-blind, placebo-controlled trial.AuthorsBarrett BP; Brown RL; Locken K; Maberry R; Bobula JA; D'Alessio DPublicationAnnals of internal medicine, 2002, Vol 137, Issue 12, p939ISSN1539-3704Publication typearticleDOI10.7326/0003-4819-137-12-200212170-00006