International Journal of Respiration, Volume 33, Issue 13,2013, Pages 961-964, doi:10.3760/cma.j.issn.1673-436X.2013.013.001
International Journal of Respiration, Volume 33, Issue 13,2013, Pages 1021-1027, doi:10.3760/cma.j.issn.1673-436X.2013.013.014
International Journal of Respiration, Volume 33, Issue 13,2013, Pages 1028-1034, doi:10.3760/cma.j.issn.1673-436X.2013.013.015
International Journal of Respiration, Volume 33, Issue 13,2013, Pages 1003-1005, doi:10.3760/cma.j.issn.1673-436X.2013.013.010
International Journal of Respiration, Volume 33, Issue 13,2013, Pages 986-989, doi:10.3760/cma.j.issn.1673-436X.2013.013.006