Beta-blockers reduced the risk of mortality and exacerbation in patients with COPD: a meta-analysis of observational studies

Du, Qingxia ; Sun, Yongchang ; Ding, Ning ; Lu, Lijin ; Chen, Ying Chalmers, James D.

PloS one, 2014-11, Vol.9 (11), p.e113048-e113048 [Periódico revisado por pares]

United States: Public Library of Science

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