Evidence of potential bias in a comparison of β blockers and calcium channel blockers in patients with chronic obstructive pulmonary disease and acute coronary syndrome: results of a multinational study

Objectives A number of observational studies have reported that, in patients with chronic obstructive pulmonary disease (COPD), β blockers (BBs) decrease risk of mortality and COPD exacerbations. To address important methodological concerns of these studies, we compared the effectiveness and safety...

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Bibliographic Details
Main Authors: Jun Liu, Mei-Shu Lai, Mengdan Liu, Chia-Hsuin Chang, Yaa-Hui Dong, Vittorio Maio, Joshua J Gagne, Matthew Alcusky, Li-Chiu Wu
Format: Article
Language:English
Published: BMJ Publishing Group 2017-03-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/7/3/e012997.full
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