Sayed, M., Abozeid, E. M., Amin, H. M., Elsayed, N. M., Nassar, Y. H., & Elsheimy, H. A. (2021). Non-alcoholic Fatty Liver and Vitamin D Levels in Extremely Obese Individuals: A Case–Control Study. Open Access Macedonian Journal of Medical Sciences, 9(B), 541–546. https://doi.org/10.3889/oamjms.2021.5976