International Journal of Respiration, Volume 34, Issue 21,2014, Pages 1632-1635, doi:10.3760/cma.j.issn.1673-436X.2014.21.009
International Journal of Respiration, Volume 34, Issue 21,2014, Pages 1623-1627, doi:10.3760/cma.j.issn.1673-436X.2014.21.007
International Journal of Respiration, Volume 34, Issue 21,2014, Pages 1618-1620, doi:10.3760/cma.j.issn.1673-436X.2014.21.005
International Journal of Respiration, Volume 34, Issue 21,2014, Pages 1636-1641, doi:10.3760/cma.j.issn.1673-436X.2014.21.010
International Journal of Respiration, Volume 34, Issue 21,2014, Pages 1606-1609, doi:10.3760/cma.j.issn.1673-436X.2014.21.002