INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 4,2011, Pages 287-290, doi:10.3760/cma.j.issn.1673-436X.2011.004.012
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 4,2011, Pages 291-294, doi:10.3760/cma.j.issn.1673-436X.2011.004.013
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 4,2011, Pages 266-269, doi:10.3760/cma.j.issn.1673-436X.2011.004.007
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 4,2011, Pages 300-303, doi:10.3760/cma.j.issn.1673-436X.2011.004.015