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12-month randomised controlled trial of ginseng extract for moderate COPD.
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, Xue CC. Shergis JL, et al. Among authors: xu y. Thorax. 2019 Jun;74(6):539-545. doi: 10.1136/thoraxjnl-2018-212665. Epub 2019 Apr 2. Thorax. 2019. PMID: 30940771 Clinical Trial.
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