International Journal of Respiration, Volume 31, Issue 18,2011, Pages 1439-1440, doi:10.3760/cma.j.issn.1673-436X.2011.018.021
International Journal of Respiration, Volume 31, Issue 18,2011, Pages 1381-1382, doi:10.3760/cma.j.issn.1673-436X.2011.018.005
International Journal of Respiration, Volume 31, Issue 18,2011, Pages 1386-1389, doi:10.3760/cma.j.issn.1673-436X.2011.018.007
International Journal of Respiration, Volume 31, Issue 18,2011, Pages 1432-1434, doi:10.3760/cma.j.issn.1673-436X.2011.018.019
International Journal of Respiration, Volume 31, Issue 18,2011, Pages 1399-1402, doi:10.3760/cma.j.issn.1673-436X.2011.018.010