PT -期刊文章盟赵Chan-Na盟——吴,Qian AU - Pan, Hai-Feng TI - Using Google Trends to investigate global COPD awareness AID - 10.1183/13993003.01076-2019 DP - 2019 Aug 01 TA - European Respiratory Journal PG - 1901076 VI - 54 IP - 2 4099 - //www.qdcxjkg.com/content/54/2/1901076.short 4100 - //www.qdcxjkg.com/content/54/2/1901076.full SO - Eur Respir J2019 Aug 01; 54