International Journal of Respiration, Volume 32, Issue 24,2012, Pages 1844-1846, doi:10.3760/cma.j.issn.1673-436X.2012.024.002
International Journal of Respiration, Volume 32, Issue 24,2012, Pages 1867-1869, doi:10.3760/cma.j.issn.1673-436X.2012.024.008
International Journal of Respiration, Volume 32, Issue 24,2012, Pages 1847-1850, doi:10.3760/cma.j.issn.1673-436X.2012.024.003
International Journal of Respiration, Volume 32, Issue 24,2012, Pages 1898-1902, doi:10.3760/cma.j.issn.1673-436X.2012.024.015
International Journal of Respiration, Volume 32, Issue 24,2012, Pages 1876-1880, doi:10.3760/cma.j.issn.1673-436X.2012.024.010