International Journal of Respiration, Volume 38, Issue 17,2018, Pages 1306-1311, doi:10.3760/cma.j.issn.1673-436X.2018.17.006
International Journal of Respiration, Volume 38, Issue 17,2018, Pages 1331-1334, doi:10.3760/cma.j.issn.1673-436X.2018.17.011
International Journal of Respiration, Volume 38, Issue 17,2018, Pages 1326-1330, doi:10.3760/cma.j.issn.1673-436X.2018.17.010
International Journal of Respiration, Volume 38, Issue 17,2018, Pages 1358-1360, doi:10.3760/cma.j.issn.1673-436X.2018.17.017
International Journal of Respiration, Volume 38, Issue 17,2018, Pages 1312-1315, doi:10.3760/cma.j.issn.1673-436X.2018.17.007