International Journal of Respiration, Volume 33, Issue 22,2013, Pages 1748-1753, doi:10.3760/cma.j.issn.1673-436X.2013.022.016
International Journal of Respiration, Volume 33, Issue 22,2013, Pages 1711-1713, doi:10.3760/cma.j.issn.1673-436X.2013.022.008
International Journal of Respiration, Volume 33, Issue 22,2013, Pages 1754-1757, doi:10.3760/cma.j.issn.1673-436X.2013.022.017
International Journal of Respiration, Volume 33, Issue 22,2013, Pages 1744-1747, doi:10.3760/cma.j.issn.1673-436X.2013.022.015
International Journal of Respiration, Volume 33, Issue 22,2013, Pages 1737-1743, doi:10.3760/cma.j.issn.1673-436X.2013.022.014