International Journal of Respiration, Volume 39, Issue 17,2019, Pages 1281-1296, doi:10.3760/cma.j.issn.1673-436X.2019.17.001
International Journal of Respiration, Volume 39, Issue 17,2019, Pages 1302-1307, doi:10.3760/cma.j.issn.1673-436X.2019.17.003
International Journal of Respiration, Volume 39, Issue 17,2019, Pages 1344-1348, doi:10.3760/cma.j.issn.1673-436X.2019.17.011
International Journal of Respiration, Volume 39, Issue 17,2019, Pages 1297-1301, doi:10.3760/cma.j.issn.1673-436X.2019.17.002