https://thorax.bmj.com/content/74/6/539 https://www.ncbi.nlm.nih.gov/pubmed/30940771?dopt=Abstract 12-month randomised controlled trial of ginseng extract for moderate COPD. Related Articles 12-month randomised controlled trial of ginseng extract for moderate COPD. Thorax. 2019 06;74(6):539-545 Authors: Shergis JL, Thien F, Worsnop CJ, Lin L, Zhang AL, Wu L, Chen Y, Xu Y, Langton D, Da Costa C, Fong H, Wu D, Story D, […]