RT期刊文章SR电子T1新的字母for COPD care: where “E” stands for España JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 1601970 DO 10.1183/13993003.01970-2016 VO 49 IS 1 A1 Young, Robert P. A1 Hopkins, Raewyn J. YR 2017 UL //www.qdcxjkg.com/content/49/1/1601970.abstract AB