International Journal of Respiration, Volume 34, Issue 6,2014, Pages 405-407, doi:10.3760/cma.j.issn.1673-436X.2014.06.002
International Journal of Respiration, Volume 34, Issue 6,2014, Pages 461-464, doi:10.3760/cma.j.issn.1673-436X.2014.06.015
International Journal of Respiration, Volume 34, Issue 6,2014, Pages 401-404, doi:10.3760/cma.j.issn.1673-436X.2014.06.001
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 413-418, doi:10.3760/cma.j.issn.1673-436X.2014.06.004