International Journal of Respiration, Volume 33, Issue 12,2013, Pages 924-930, doi:10.3760/cma.j.issn.1673-436X.2013.012.011
International Journal of Respiration, Volume 33, Issue 12,2013, Pages 941-944, doi:10.3760/cma.j.issn.1673-436X.2013.012.014
International Journal of Respiration, Volume 33, Issue 12,2013, Pages 945-948, doi:10.3760/cma.j.issn.1673-436X.2013.012.015
International Journal of Respiration, Volume 33, Issue 12,2013, Pages 906-910, doi:10.3760/cma.j.issn.1673-436X.2013.012.007
International Journal of Respiration, Volume 33, Issue 12,2013, Pages 957-960, doi:10.3760/cma.j.issn.1673-436X.2013.012.018