Cochrane Database of Systematic Reviews 2017, Issue 1. Art. No.: CD001284.
DOI: 10.1002/14651858.CD001284.pub2.
Cochrane PEC PEARLS 
 Practical Evidence About Real Life Situation |
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Cochrane PEC Corner 
| Cochrane Corner |
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Cochrane PEC media
Combined inhaled beta-agonist and anticholinergic agents for emergency management in adult with asthma