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Beta-Blockers Reduced the Risk of Mortality and Exacerbation in Patients with COPD: A Meta-Analysis of Observational Studies |
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| Authors: | Qingxia Du Yongchang Sun Ning Ding Lijin Lu Ying Chen |
| Affiliation: | Department of Respiratory Medicine and Department of Emergency, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China.; University of Dundee, United Kingdom, |
| Abstract: | |
| Keywords: | |