International Journal of Respiration, Volume 37, Issue 4,2017, Pages 297-301, doi:10.3760/cma.j.issn.1673-436X.2017.04.012
International Journal of Respiration, Volume 37, Issue 4,2017, Pages 263-266, doi:10.3760/cma.j.issn.1673-436X.2017.04.005
International Journal of Respiration, Volume 37, Issue 4,2017, Pages 241-245, doi:10.3760/cma.j.issn.1673-436X.2017.04.001
International Journal of Respiration, Volume 37, Issue 4,2017, Pages 267-271, doi:10.3760/cma.j.issn.1673-436X.2017.04.006
International Journal of Respiration, Volume 37, Issue 4,2017, Pages 253-257, doi:10.3760/cma.j.issn.1673-436X.2017.04.003