Cookson J B
Chest. 1987 Jun;91(6 Suppl):97S-103S. doi: 10.1378/chest.91.6_supplement.97s.
Prevalence rates for asthma in various parts of the world are different and this cannot be entirely explained by differences in methodology. Low prevalence rates are found in third world countries, particularly marked for children. The reasons for these differences are obscure but are largely environmental. Some suggestions are made herein about their nature.
世界各地哮喘的患病率各不相同，这不能完全用方法学上的差异来解释。在第三世界国家发现患病率较低，在儿童中尤为明显。这些差异的原因尚不清楚，但很大程度上是环境因素。本文对其性质提出了一些建议。
