International Journal of Respiration, Volume 38, Issue 8,2018, Pages 590-593, doi:10.3760/cma.j.issn.1673-436X.2018.08.005
International Journal of Respiration, Volume 38, Issue 8,2018, Pages 624-626, doi:10.3760/cma.j.issn.1673-436X.2018.08.012
International Journal of Respiration, Volume 38, Issue 8,2018, Pages 573-583, doi:10.3760/cma.j.issn.1673-436X.2018.08.003
International Journal of Respiration, Volume 38, Issue 8,2018, Pages 620-623, doi:10.3760/cma.j.issn.1673-436X.2018.08.011
International Journal of Respiration, Volume 38, Issue 8,2018, Pages 627-630, doi:10.3760/cma.j.issn.1673-436X.2018.08.013