International Journal of Respiration, Volume 34, Issue 10,2014, Pages 765-769, doi:10.3760/cma.j.issn.1673-436X.2014.010.012
International Journal of Respiration, Volume 34, Issue 10,2014, Pages 792-795, doi:10.3760/cma.j.issn.1673-436X.2014.010.017
International Journal of Respiration, Volume 34, Issue 10,2014, Pages 776-780, doi:10.3760/cma.j.issn.1673-436X.2014.010.014
International Journal of Respiration, Volume 34, Issue 10,2014, Pages 781-785, doi:10.3760/cma.j.issn.1673-436X.2014.010.015
International Journal of Respiration, Volume 34, Issue 10,2014, Pages 796-798, doi:10.3760/cma.j.issn.1673-436X.2014.010.018