International Journal of Respiration, Volume 38, Issue 21,2018, Pages 1676-1680, doi:10.3760/cma.j.issn.1673-436X.2018.21.015
International Journal of Respiration, Volume 38, Issue 21,2018, Pages 1624-1628, doi:10.3760/cma.j.issn.1673-436X.2018.21.005
International Journal of Respiration, Volume 38, Issue 21,2018, Pages 1609-1615, doi:10.3760/cma.j.issn.1673-436X.2018.21.002
International Journal of Respiration, Volume 38, Issue 21,2018, Pages 1629-1634, doi:10.3760/cma.j.issn.1673-436X.2018.21.006
International Journal of Respiration, Volume 38, Issue 21,2018, Pages 1601-1608, doi:10.3760/cma.j.issn.1673-436X.2018.21.001