International Journal of Respiration, Volume 32, Issue 12,2012, Pages 929-932, doi:10.3760/cma.j.issn.1673-436X.2012.012.014
International Journal of Respiration, Volume 32, Issue 12,2012, Pages 901-902, doi:10.3760/cma.j.issn.1673-436X.2012.012.006
International Journal of Respiration, Volume 32, Issue 12,2012, Pages 906-909, doi:10.3760/cma.j.issn.1673-436X.2012.012.008
International Journal of Respiration, Volume 32, Issue 12,2012, Pages 923-924, doi:10.3760/cma.j.issn.1673-436X.2012.012.012
International Journal of Respiration, Volume 32, Issue 12,2012, Pages 910-913, doi:10.3760/cma.j.issn.1673-436X.2012.012.009