International Journal of Respiration, Volume 33, Issue 17,2013, Pages 1338-1342, doi:10.3760/cma.j.issn.1673-436X.2013.017.014
International Journal of Respiration, Volume 33, Issue 17,2013, Pages 1319-1324, doi:10.3760/cma.j.issn.1673-436X.2013.017.010
International Journal of Respiration, Volume 33, Issue 17,2013, Pages 1351-1355, doi:10.3760/cma.j.issn.1673-436X.2013.017.017
International Journal of Respiration, Volume 33, Issue 17,2013, Pages 1314-1318, doi:10.3760/cma.j.issn.1673-436X.2013.017.009
International Journal of Respiration, Volume 33, Issue 17,2013, Pages 1281-1283, doi:10.3760/cma.j.issn.1673-436X.2013.017.001