APA (7th ed.) Citation

Ra, S. W., Sze, M. A., Lee, E. C., Tam, S., Oh, Y., Fishbane, N., . . . Sin, D. D. (2017). Azithromycin and risk of COPD exacerbations in patients with and without Helicobacter pylori. Respiratory research, 18(1), 109-9. https://doi.org/10.1186/s12931-017-0594-x

Chicago Style (17th ed.) Citation

Ra, Seung Won, et al. "Azithromycin and Risk of COPD Exacerbations in Patients with and Without Helicobacter Pylori." Respiratory Research 18, no. 1 (2017): 109-9. https://doi.org/10.1186/s12931-017-0594-x.

MLA (9th ed.) Citation

Ra, Seung Won, et al. "Azithromycin and Risk of COPD Exacerbations in Patients with and Without Helicobacter Pylori." Respiratory Research, vol. 18, no. 1, 2017, pp. 109-9, https://doi.org/10.1186/s12931-017-0594-x.