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Inhaled steroids and risk of pneumonia for chronic obstructive pulmonary disease.

Cochrane Db Syst Rev. 2014 Mar 10; 2014 (3): CD010115CD010115.
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Addition to inhaled corticosteroids of long-acting beta2-agonists versus anti-leukotrienes for chronic asthma.

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Intermittent versus daily inhaled corticosteroids for persistent asthma in children and adults.

Cochrane Db Syst Rev. 2013 Feb 28; 2013 (2): CD009611CD009611.