International Journal of Respiration, Volume 34, Issue 14,2014, Pages 1056-1062, doi:10.3760/cma.j.issn.1673-436X.2014.14.005
International Journal of Respiration, Volume 34, Issue 14,2014, Pages 1069-1074, doi:10.3760/cma.j.issn.1673-436X.2014.14.007
International Journal of Respiration, Volume 34, Issue 14,2014, Pages 1111-1115, doi:10.3760/cma.j.issn.1673-436X.2014.14.015
International Journal of Respiration, Volume 34, Issue 14,2014, Pages 1084-1087, doi:10.3760/cma.j.issn.1673-436X.2014.14.010
International Journal of Respiration, Volume 34, Issue 14,2014, Pages 1107-1110, doi:10.3760/cma.j.issn.1673-436X.2014.14.014