APA (7th ed.) Citation

J, K., A, H., D, A., S, A., & S, N. (2021). Optimising vitamin D levels in patients with COVID-19. Hong Kong medical journal = Xianggang yi xue za zhi, 27(2), 154. https://doi.org/10.12809/hkmj208824

Chicago Style (17th ed.) Citation

J, Kaler, Hussain A, Azim D, Ali S, and Nasim S. "Optimising Vitamin D Levels in Patients with COVID-19." Hong Kong Medical Journal = Xianggang Yi Xue Za Zhi 27, no. 2 (2021): 154. https://doi.org/10.12809/hkmj208824.

MLA (9th ed.) Citation

J, Kaler, et al. "Optimising Vitamin D Levels in Patients with COVID-19." Hong Kong Medical Journal = Xianggang Yi Xue Za Zhi, vol. 27, no. 2, 2021, p. 154, https://doi.org/10.12809/hkmj208824.