International Journal of Respiration, Volume 34, Issue 6,2014, Pages 413-418, doi:10.3760/cma.j.issn.1673-436X.2014.06.004
International Journal of Respiration, Volume 34, Issue 6,2014, Pages 419-422, doi:10.3760/cma.j.issn.1673-436X.2014.06.005
International Journal of Respiration, Volume 34, Issue 6,2014, Pages 468-472, doi:10.3760/cma.j.issn.1673-436X.2014.06.017
International Journal of Respiration, Volume 34, Issue 6,2014, Pages 478-480, doi:10.3760/cma.j.issn.1673-436X.2014.06.019
International Journal of Respiration, Volume 34, Issue 6,2014, Pages 405-407, doi:10.3760/cma.j.issn.1673-436X.2014.06.002