International Journal of Respiration, Volume 33, Issue 10,2013, Pages 775-778, doi:10.3760/cma.j.issn.1673-436X.2013.010.014
International Journal of Respiration, Volume 33, Issue 10,2013, Pages 721-725, doi:10.3760/cma.j.issn.1673-436X.2013.010.001
International Journal of Respiration, Volume 33, Issue 10,2013, Pages 742-747, doi:10.3760/cma.j.issn.1673-436X.2013.010.006
International Journal of Respiration, Volume 33, Issue 10,2013, Pages 794-797, doi:10.3760/cma.j.issn.1673-436X.2013.010.018
International Journal of Respiration, Volume 33, Issue 10,2013, Pages 768-771, doi:10.3760/cma.j.issn.1673-436X.2013.010.012