International Journal of Respiration, Volume 39, Issue 18,2019, Pages 1407-1411, doi:10.3760/cma.j.issn.1673-436X.2019.18.009
International Journal of Respiration, Volume 39, Issue 18,2019, Pages 1412-1417, doi:10.3760/cma.j.issn.1673-436X.2019.18.010
International Journal of Respiration, Volume 39, Issue 18,2019, Pages 1402-1406, doi:10.3760/cma.j.issn.1673-436X.2019.18.008
International Journal of Respiration, Volume 39, Issue 18,2019, Pages 1436-1440, doi:10.3760/cma.j.issn.1673-436X.2019.18.015
International Journal of Respiration, Volume 39, Issue 18,2019, Pages 1427-1430, doi:10.3760/cma.j.issn.1673-436X.2019.18.013