Purchase Short-Term Access

Treatment of the Common Cold with Unrefined Echinacea: A Randomized, Double-Blind, Placebo-Controlled Trial
Bruce P. Barrett, MD, PhD; Roger L. Brown, PhD; Kristin Locken, BA; Rob Maberry, BA; James A. Bobula, PhD; Donn D'Alessio, MD
Annals of Internal Medicine 2002;137:939-946. doi:10.7326/0003-4819-137-12-200212170-00006

Purchase Online access to this article for 24 hours
Buy Now

Want to Subscribe?

Learn more about subscription options

Forgot your password?
Enter your username and email address. We'll send you a reminder to the email address on record.