APA (7th ed.) Citation

Nissen, F., Morales, D. R., Mullerova, H., Smeeth, L., Douglas, I. J., & Quint, J. K. (2017). Validation of asthma recording in the Clinical Practice Research Datalink (CPRD). BMJ open, 7(8), e017474. https://doi.org/10.1136/bmjopen-2017-017474

Chicago Style (17th ed.) Citation

Nissen, Francis, Daniel R. Morales, Hana Mullerova, Liam Smeeth, Ian J. Douglas, and Jennifer K. Quint. "Validation of Asthma Recording in the Clinical Practice Research Datalink (CPRD)." BMJ Open 7, no. 8 (2017): e017474. https://doi.org/10.1136/bmjopen-2017-017474.

MLA (9th ed.) Citation

Nissen, Francis, et al. "Validation of Asthma Recording in the Clinical Practice Research Datalink (CPRD)." BMJ Open, vol. 7, no. 8, 2017, p. e017474, https://doi.org/10.1136/bmjopen-2017-017474.