APA (7th ed.) Citation

Du, Q., Sun, Y., Ding, N., Lu, L., & Chen, Y. Beta-blockers reduced the risk of mortality and exacerbation in patients with COPD: A meta-analysis of observational studies. Public Library of Science (PLoS).

Chicago Style (17th ed.) Citation

Du, Qingxia, Yongchang Sun, Ning Ding, Lijin Lu, and Ying Chen. Beta-blockers Reduced the Risk of Mortality and Exacerbation in Patients with COPD: A Meta-analysis of Observational Studies. Public Library of Science (PLoS).

MLA (9th ed.) Citation

Du, Qingxia, et al. Beta-blockers Reduced the Risk of Mortality and Exacerbation in Patients with COPD: A Meta-analysis of Observational Studies. Public Library of Science (PLoS).