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Background: The proliferation of inhaler devices has resulted in a confusing number of choices for clinicians who are selecting a delivery device for aerosol therapy. There are advantages and ...

生意社商品价格指数，不仅可用于反映商品价格变化，也可为更多的产业人士提供商品定价参考。其原理如下： 规格属性：优等品 议价80吨 即期现货 山东省 > 青岛市 07-04 09:44 3天 品牌/产地：国产 规格属性：牌号:5005 生产商：亨斯迈 质量标准：品级:优等品议价 ...

Asthma is a costly chronic disease that can be controlled with proper management. We examined asthma costs in a large employment-based population. Health care claims data from 1994 through 1998 ...