International Journal of Respiration, Volume 38, Issue 19,2018, Pages 1516-1520, doi:10.3760/cma.j.issn.1673-436X.2018.19.015
International Journal of Respiration, Volume 38, Issue 19,2018, Pages 1476-1481, doi:10.3760/cma.j.issn.1673-436X.2018.19.008
International Journal of Respiration, Volume 38, Issue 19,2018, Pages 1510-1515, doi:10.3760/cma.j.issn.1673-436X.2018.19.014
International Journal of Respiration, Volume 38, Issue 19,2018, Pages 1441-1444, doi:10.3760/cma.j.issn.1673-436X.2018.19.001
International Journal of Respiration, Volume 38, Issue 19,2018, Pages 1465-1469, doi:10.3760/cma.j.issn.1673-436X.2018.19.006