INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 3,2009, Pages 146-149, doi:10.3760/cma.j.issn.1673-436X.2009.03.005
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INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 3,2009, Pages 137-141, doi:10.3760/cma.j.issn.1673-436X.2009.03.003
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 3,2009, Pages 159-162, doi:10.3760/cma.j.issn.1673-436X.2009.03.008
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 3,2009, Pages 145,192, doi:10.3760/cma.j.issn.1673-436X,2009.03.016