INTERNATIONAL JOURNAL OF RESPIRATION, Volume 28, Issue 11,2008, Pages 644-646, doi:10.3760/cma.j.issn.1673-436X.2008.11.002
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 28, Issue 11,2008, Pages 650-654, doi:10.3760/cma.j.issn.1673-436X.2008.11.004
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 28, Issue 11,2008, Pages 692-695, doi:10.3760/cma.j.issn.1673-436X.2008.11.014
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 28, Issue 11,2008, Pages 696-700, doi:10.3760/cma.j.issn.1673-436X.2008.11.015
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 28, Issue 11,2008, Pages 688-691, doi:10.3760/cma.j.issn.1673-436X.2008.11.013