Islam Majumder, M.M. , Rahman, H. , Ahmed, M. , Uddin, M.N. , Ahmed, T. and Mahadi, A.R. 2024. Prevalence of Vitamin D Deficiency among Patients Attending Tertiary Level Hospitals in Bangladesh: Hospital-Based Cross-Sectional Study. Medicine Today. 36, 1 (May 2024), 17–22. DOI:https://doi.org/10.3329/medtoday.v36i1.72876.