International Journal of Respiration, Volume 36, Issue 20,2016, Pages 1571-1574, doi:10.3760/cma.j.issn.1673-436X.2016.20.011
International Journal of Respiration, Volume 36, Issue 20,2016, Pages 1592-1595, doi:10.3760/cma.j.issn.1673-436X.2016.20.016
International Journal of Respiration, Volume 36, Issue 20,2016, Pages 1561-1565, doi:10.3760/cma.j.issn.1673-436X.2016.20.009
International Journal of Respiration, Volume 36, Issue 20,2016, Pages 1566-1570, doi:10.3760/cma.j.issn.1673-436X.2016.20.010
International Journal of Respiration, Volume 36, Issue 20,2016, Pages 1583-1586, doi:10.3760/cma.j.issn.1673-436X.2016.20.014