International Journal of Respiration, Volume 37, Issue 23,2017, Pages 1832-1836, doi:10.3760/cma.j.issn.1673-436X.2017.23.015
International Journal of Respiration, Volume 37, Issue 23,2017, Pages 1809-1814, doi:10.3760/cma.j.issn.1673-436X.2017.23.010
International Journal of Respiration, Volume 37, Issue 23,2017, Pages 1804-1808, doi:10.3760/cma.j.issn.1673-436X.2017.23.009
International Journal of Respiration, Volume 37, Issue 23,2017, Pages 1778-1783, doi:10.3760/cma.j.issn.1673-436X.2017.23.004
International Journal of Respiration, Volume 37, Issue 23,2017, Pages 1828-1831, doi:10.3760/cma.j.issn.1673-436X.2017.23.014