RT期刊文章SR电子conse T1结果quent to “early” COPD for interventional studies JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1902380 DO 10.1183/13993003.02380-2019 VO 55 IS 3 A1 Rennard, Stephen I. YR 2020 UL //www.qdcxjkg.com/content/55/3/1902380.abstract AB