Tasrin, Tarana, Arbin Siddiquea, Nafisa Hossain, and Miliva Mozaffor. “Comparison of Serum Vitamin D Level Between Outdoor and Indoor Working Professionals and Its Correlation With Serum Parathyroid Hormone Level”. Journal of Bangladesh Society of Physiologist 17, no. 2 (May 9, 2024): 78–84. Accessed November 24, 2024. https://banglajol.info/index.php/JBSP/article/view/72050.