International Journal of Respiration, Volume 39, Issue 23,2019, Pages 1778-1783, doi:10.3760/cma.j.issn.1673-436X.2019.23.005
International Journal of Respiration, Volume 39, Issue 23,2019, Pages 1817-1821, doi:10.3760/cma.j.issn.1673-436X.2019.23.012
International Journal of Respiration, Volume 39, Issue 23,2019, Pages 1791-1794, doi:10.3760/cma.j.issn.1673-436X.2019.23.007
International Journal of Respiration, Volume 39, Issue 23,2019, Pages 1766-1768, doi:10.3760/cma.j.issn.1673-436X.2019.23.002
International Journal of Respiration, Volume 39, Issue 23,2019, Pages 1827-1830, doi:10.3760/cma.j.issn.1673-436X.2019.23.014