International Journal of Respiration, Volume 38, Issue 14,2018, Pages 1053-1056, doi:10.3760/cma.j.issn.1673-436X.2018.14.003
International Journal of Respiration, Volume 38, Issue 14,2018, Pages 1098-1102, doi:10.3760/cma.j.issn.1673-436X.2018.14.013
International Journal of Respiration, Volume 38, Issue 14,2018, Pages 1084-1087, doi:10.3760/cma.j.issn.1673-436X.2018.14.010
International Journal of Respiration, Volume 38, Issue 14,2018, Pages 1067-1070, doi:10.3760/cma.j.issn.1673-436X.2018.14.006
International Journal of Respiration, Volume 38, Issue 14,2018, Pages 1071-1073, doi:10.3760/cma.j.issn.1673-436X.2018.14.007