Question:In people with chronic obstructive pulmonary disease, what are the effects of combining long-acting beta2-agonists and tiotropium compared with either drug alone?

EXCERPT of full Clinical Answer

This Cochrane Clinical Answer evaluates combined long-acting beta2-agonists plus tiotropium compared with long-acting beta2-agonists or tiotropium alone in people with chronic obstructive pulmonary disease.

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