2Wang HY,Wong GW, Chen YZ. et al. Prevalence of asthma amongChinese adolegcents living in Canada and in China [J]. CMAJ,2008,179(11): 1133-1142.
3Muhlhauser I, Lenz M. Does patient knowledge improve treatmentoutcome [J]. Z Evid Fortbild Qual Gesundhwes, 2008, 102(4):223-230.
4Magzamen S, Patel B. Davis A. et al. Kickin Asthma: schoolbasedasthma education in an urban community [J]. J Sch Health, 2008, 78(12): 655-665.
5Siersted HC,Boldsen J, Hansen HS, et al. Population based study of risk factors for underdiagnosis of asthma in adoles- cence: Odense schoolchild studyCommentary: Risk factors for underdiagnosis of asthma in adolescenceCommentary : I- dentifying the correct risks in diagnosisCommentary:Impro- ring the diagnostic rate in asthma:a community issue [ J]. Bmj,1998,316(7132) :651 -657.
6Vonk JM, Jongepier H, Panhuysen CIM, et al. Risk factors associated with the presence of irreversible airflow limitation and reduced transfer coefficient in patients with asthma after 26 years of follow up [ J ]. Thorax, 2003,58 (4) : 322 - 327.
