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 1516-1520, doi:10.3760/cma.j.issn.1673-436X.2018.19.015
International Journal of Respiration, Volume 38, Issue 19,2018, Pages 1505-1509, doi:10.3760/cma.j.issn.1673-436X.2018.19.013
International Journal of Respiration, Volume 38, Issue 19,2018, Pages 1445-1448, doi:10.3760/cma.j.issn.1673-436X.2018.19.002