International Journal of Respiration, Volume 38, Issue 20,2018, Pages 1533-1534, doi:10.3760/cma.j.issn.1673-436X.2018.20.004
International Journal of Respiration, Volume 38, Issue 20,2018, Pages 1557-1562, doi:10.3760/cma.j.issn.1673-436X.2018.20.009
International Journal of Respiration, Volume 38, Issue 20,2018, Pages 1574-1577, doi:10.3760/cma.j.issn.1673-436X.2018.20.012
International Journal of Respiration, Volume 38, Issue 20,2018, Pages 1563-1566, doi:10.3760/cma.j.issn.1673-436X.2018.20.010
International Journal of Respiration, Volume 38, Issue 20,2018, Pages 1588-1591, doi:10.3760/cma.j.issn.1673-436X.2018.20.015