APA (7th ed.) Citation

E, C. U., SN, K., Z, Y., R, K., D, B., E, S. D., . . . K, K. Y. (2026). Low 1,25-dihydroxyvitamin D levels are associated with severe COVID-19: An observational study in hospitalized patients. Frontiers in nutrition, 13, 1836021. https://doi.org/10.3389/fnut.2026.1836021

Chicago Style (17th ed.) Citation

E, Canbolat Unlu, Karabela SN, Yesilbag Z, Korkusuz R, Borcak D, Salim Dogdas E, Senoglu S, Isiksacan N, and Kart Yasar K. "Low 1,25-dihydroxyvitamin D Levels Are Associated with Severe COVID-19: An Observational Study in Hospitalized Patients." Frontiers in Nutrition 13 (2026): 1836021. https://doi.org/10.3389/fnut.2026.1836021.

MLA (9th ed.) Citation

E, Canbolat Unlu, et al. "Low 1,25-dihydroxyvitamin D Levels Are Associated with Severe COVID-19: An Observational Study in Hospitalized Patients." Frontiers in Nutrition, vol. 13, 2026, p. 1836021, https://doi.org/10.3389/fnut.2026.1836021.