APA (7th ed.) Citation

Koretz, R., Lin, K. W., Ioannidis, J. P. A., & Lenzer, J. (2015). Is widespread screening for hepatitis C justified? BMJ: British Medical Journal, 350(7991), g7809. https://doi.org/10.1136/bmj.g7809

Chicago Style (17th ed.) Citation

Koretz, Ronald, Kenneth W. Lin, John P. A. Ioannidis, and Jeanne Lenzer. "Is Widespread Screening for Hepatitis C Justified?" BMJ: British Medical Journal 350, no. 7991 (2015): g7809. https://doi.org/10.1136/bmj.g7809.

MLA (9th ed.) Citation

Koretz, Ronald, et al. "Is Widespread Screening for Hepatitis C Justified?" BMJ: British Medical Journal, vol. 350, no. 7991, 2015, p. g7809, https://doi.org/10.1136/bmj.g7809.