International Journal of Respiration, Volume 33, Issue 16,2013, Pages 1240-1243, doi:10.3760/cma.j.issn.1673-436X.2013.016.011
International Journal of Respiration, Volume 33, Issue 16,2013, Pages 1208-1210, doi:10.3760/cma.j.issn.1673-436X.2013.016.003
International Journal of Respiration, Volume 33, Issue 16,2013, Pages 1256-1259, doi:10.3760/cma.j.issn.1673-436X.2013.016.015
International Journal of Respiration, Volume 33, Issue 16,2013, Pages 1260-1264, doi:10.3760/cma.j.issn.1673-436X.2013.016.016
International Journal of Respiration, Volume 33, Issue 16,2013, Pages 1279-1280, doi:10.3760/cma.j.issn.1673-436X.2013.016.020