INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 6,2011, Pages 436-440, doi:10.3760/cma.j.issn.1673-436X.2011.006.008
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 6,2011, Pages 468-470, doi:10.3760/cma.j.issn.1673-436X.2011.006.016
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 6,2011, Pages 441-445, doi:10.3760/cma.j.issn.1673-436X.2011.006.009
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 6,2011, Pages 454-457, doi:10.3760/cma.j.issn.1673-436X.2011.006.012
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 31, Issue 6,2011, Pages 424-427, doi:10.3760/cma.j.issn.1673-436X.2011.006.005