http://www.pharmaceuticalclinicaltrials.com/a-randomized-trial-of-two-different-doses-of-a-shr-5-rhodiola-rosea-extract-versus-placebo-and-control-of-capacity-for-mental-work-an-article-from-phytomedicine-journal-of-phytotherapy-p/ Tue, 30 Mar 2010 19:03:18 +0000 http://wordpress.org/?v=2.9.1 hourly 1