INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 23,2009, Pages 1430-1432, doi:10.3760/cma.j.issn.1673-436X.2009.023.005
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INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 23,2009, Pages 1409-1417, doi:10.3760/cma.j.issn.1673-436X.2009.023.001
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 23,2009, Pages 1454-1457, doi:10.3760/cma.j.issn.1673-436X.2009.023.011
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 23,2009, Pages 1421-1424, doi:10.3760/cma.j.issn.1673-436X.2009.023.003