MODERN ENTERPRISE EDUCATION, , Issue 19,2009, Pages 66-69, doi:10.3969/j.issn.1008-1496.2009.19.029
INTERNATIONAL JOURNAL OF RESPIRATION, Volume 29, Issue 19,2009, Pages 1167-1168,封3, doi:10.3760/cma.j.issn.1673-436X.2009.019.005
CHINA FOREIGN MEDICAL TREATMENT, Volume 28, Issue 19,2009, Pages 174-175, doi:10.3969/j.issn.1674-0742.2009.19.157