International Journal of Respiration, Volume 33, Issue 15,2013, Pages 1178-1181, doi:10.3760/cma.j.issn.1673-436X.2013.015.013
International Journal of Respiration, Volume 33, Issue 15,2013, Pages 1188-1191, doi:10.3760/cma.j.issn.1673-436X.2013.015.015
International Journal of Respiration, Volume 33, Issue 15,2013, Pages 1140-1143, doi:10.3760/cma.j.issn.1673-436X.2013.015.004
International Journal of Respiration, Volume 33, Issue 15,2013, Pages 1158-1161, doi:10.3760/cma.j.issn.1673-436X.2013.015.008
International Journal of Respiration, Volume 33, Issue 15,2013, Pages 1174-1177, doi:10.3760/cma.j.issn.1673-436X.2013.015.012