Tasrin, Tarana, Shahnila Ferdousi, Md Kamal Sultan, and Miliva Mozaffor. “Correlation of Serum Vitamin D and Calcium Levels Between Outdoor and Indoor Working Professionals in Dhaka City, Bangladesh”. Community Based Medical Journal 12, no. 1 (February 19, 2023): 87–92. Accessed September 27, 2024. https://banglajol.info/index.php/CBMJ/article/view/64363.