APA (7th ed.) Citation

K, E. E., S, R., & B, M. (2015). Anonymising and sharing individual patient data. BMJ (Clinical research ed.), 350, h1139. https://doi.org/10.1136/bmj.h1139

Chicago Style (17th ed.) Citation

K, El Emam, Rodgers S, and Malin B. "Anonymising and Sharing Individual Patient Data." BMJ (Clinical Research Ed.) 350 (2015): h1139. https://doi.org/10.1136/bmj.h1139.

MLA (9th ed.) Citation

K, El Emam, et al. "Anonymising and Sharing Individual Patient Data." BMJ (Clinical Research Ed.), vol. 350, 2015, p. h1139, https://doi.org/10.1136/bmj.h1139.