12-month randomised controlled trial of ginseng extract for moderate COPD
Johannah Linda Shergis, Francis Thien, Christopher John Worsnop, Lin Lin, Anthony L Zhang, Lei Wu, Yuanbin Chen, Yinji Xu, David Langton, Cliff Da Costa, Harry Fong, Darong Wu, David Story, Charlie C Xue
Thorax Jun 2019, 74 (6) 539-545; DOI: 10.1136/thoraxjnl-2018-212665