International Journal of Respiration, Volume 38, Issue 18,2018, Pages 1377-1380, doi:10.3760/cma.j.issn.1673-436X.2018.18.004
International Journal of Respiration, Volume 38, Issue 18,2018, Pages 1391-1395, doi:10.3760/cma.j.issn.1673-436X.2018.18.007
International Journal of Respiration, Volume 38, Issue 18,2018, Pages 1367-1372, doi:10.3760/cma.j.issn.1673-436X.2018.18.002
International Journal of Respiration, Volume 38, Issue 18,2018, Pages 1406-1409, doi:10.3760/cma.j.issn.1673-436X.2018.18.010
International Journal of Respiration, Volume 38, Issue 18,2018, Pages 1373-1376, doi:10.3760/cma.j.issn.1673-436X.2018.18.003