SCI
1September
Airpollutionandfamilyrelateddeterminantsofasthmaonsetandpersistentwheezinginchildren:nationwidecase-controlstudy
HolstGitteJ,PedersenCarstenB,ThygesenMaleneetal.Airpollutionandfamilyrelateddeterminantsofasthmaonsetandpersistentwheezinginchildren:nationwidecase-controlstudy.[J].BMJ,,:m.
Objective目的
Toidentifyriskfactors(airpollutionandfamilyrelated)fortheonsetofasthmaandpersistentwheezinginchildren.
为了确定儿童哮喘发作和持续喘息的危险因素（空气污染和家庭因素）。
Design设计
Nationwidecase-controlstudy.
全国性病例对照研究。
Setting背景
Denmark
丹麦
Participants参与者
AllDanishchildrenbornfromtoandfollowedforasthmaonsetandpersistentwheezingfromage1yearto15years.
-年出生的儿童，均患有哮喘发作和持续喘息，从1岁随访至15岁。
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