International Journal of Respiration, Volume 34, Issue 5,2014, Pages 325-327, doi:10.3760/cma.j.issn.1673-436X.2014.05.002
International Journal of Respiration, Volume 34, Issue 5,2014, Pages 376-381, doi:10.3760/cma.j.issn.1673-436X.2014.05.014
International Journal of Respiration, Volume 34, Issue 5,2014, Pages 341-346, doi:10.3760/cma.j.issn.1673-436X.2014.05.006
International Journal of Respiration, Volume 34, Issue 5,2014, Pages 351-353, doi:10.3760/cma.j.issn.1673-436X.2014.05.008
International Journal of Respiration, Volume 34, Issue 5,2014, Pages 328-331, doi:10.3760/cma.j.issn.1673-436X.2014.05.003