North American (Panax quinquefolius) and Asian Ginseng (Panax ginseng) Preparations for Prevention of the Common Cold in Healthy Adults: A Systematic Review

by Seida, Jennifer Krebs, Durec, Tamara, Kuhle, Stefan
Published 2011

From the Trenches: A Cross-Sectional Study Applying the GRADE Tool in Systematic Reviews of Healthcare Interventions

by Hartling, Lisa, Fernandes, Ricardo M., Seida, Jennifer, Vandermeer, Ben, Dryden, Donna M.
Published 2012