International Journal of Respiration, Volume 34, Issue 13,2014, Pages 1031-1034, doi:10.3760/cma.j.issn.1673-436X.2014.13.019
International Journal of Respiration, Volume 34, Issue 13,2014, Pages 974-976, doi:10.3760/cma.j.issn.1673-436X.2014.13.004
International Journal of Respiration, Volume 34, Issue 13,2014, Pages 980-983, doi:10.3760/cma.j.issn.1673-436X.2014.13.006
International Journal of Respiration, Volume 34, Issue 13,2014, Pages 961-966, doi:10.3760/cma.j.issn.1673-436X.2014.13.001
International Journal of Respiration, Volume 34, Issue 13,2014, Pages 1018-1020, doi:10.3760/cma.j.issn.1673-436X.2014.13.015