| Both the systematic review and meta-analyses confirmed the superiority of combination therapy to inhaled corticosteroids monotherapy. |
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| Two meta-analyses of milk thistle for liver disease detail the major limitations of prior studies and conclude that data are insufficient to support its use at this time. |
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| If you live near a large medical library with vast holdings, you may be able to find and read clinical research studies, meta-analyses, and systematic reviews. |
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| In contrast, meta-analyses are often noncomprehensive because many references must be dropped due to small sample sizes and missing data. |
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