摘要
Asthmaisverycommoninchildren;inWesterncountries,itisthemostcommondiagnosisinchilrenadmittedtohospital.Mostsurveysreportthatatlesst10%ofchildrenhavebeendiagnosedwithasthma,andrecentstudiesnotethatupto40-50%ofpre-schoolchildrenhavehadrecurrentwheezeoverthepreceding12mohths.Thereisnowlittledoubtthattheprevalenceofasthmahasincreasedworldwideoverthelast10-20years(Figure1).
出版日期
2004年05月15日（中国期刊网平台首次上网日期，不代表论文的发表时间）
