％0期刊文章％a halpin，David M.G.％A Singh，Dave％A Hadfield，Ruth M.％T吸入皮质类固醇和COVID-19：系统评价和临床视角％D 2020％R 10.1183/13993003.01009-2020％J欧洲呼吸道5％U //www.qdcxjkg.com/content/erj/55/5/5/5/2001009.full.pdf