INTERNATIONAL JOURNAL OF RESPIRATION, Volume 27, Issue 14,2007, Pages 1048-1050, doi:10.3760/cma.j.issn.1673-436X.2007.14.003
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 27, Issue 14,2007, Pages 1041-1044, doi:10.3760/cma.j.issn.1673-436X.2007.14.001
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 27, Issue 14,2007, Pages 1065-1068, doi:10.3760/cma.j.issn.1673-436X.2007.14.008
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 27, Issue 14,2007, Pages 1094-1096, doi:10.3760/cma.j.issn.1673-436X.2007.14.015