International Journal of Respiration, Volume 39, Issue 19,2019, Pages 1441-1446, doi:10.3760/cma.j.issn.1673-436X.2019.19.001
International Journal of Respiration, Volume 39, Issue 19,2019, Pages 1492-1496, doi:10.3760/cma.j.issn.1673-436X.2019.19.010
International Journal of Respiration, Volume 39, Issue 19,2019, Pages 1463-1466, doi:10.3760/cma.j.issn.1673-436X.2019.19.005
International Journal of Respiration, Volume 39, Issue 19,2019, Pages 1497-1500, doi:10.3760/cma.j.issn.1673-436X.2019.19.011
International Journal of Respiration, Volume 39, Issue 19,2019, Pages 1501-1503, doi:10.3760/cma.j.issn.1673-436X.2019.19.012