Akter, Khalada, Riadul Zannat Riad, Taskina Ali, and Laila Anjuman Banu. “Association of Vitamin D Receptor Gene Single Nucleotide Polymorphism (ApaI) With Chronic Obstructive Pulmonary Disease”. Eastern Medical College Journal 10, no. 1 (July 16, 2025): 33–39. Accessed October 25, 2025. https://www.banglajol.info/index.php/EMCJ/article/view/82562.