Abbas, B.G., Al Khalidi, N.M. and Jasim, A.H. 2022. Level of serum 25(OH) vitamin D among hospitalized COVID-19 patients in Iraq, Diwaniyah city. International journal of health sciences. 6, S1 (Jun. 2022), 14475–14480. DOI:https://doi.org/10.53730/ijhs.v6nS1.8742.