Vitamin D and it’s Association with FokI VDR Polymorphism in Patients with Asthma-COPD Overlap. J Rang Med Col. [Internet]. 2024 May 5 [cited 2026 Jun. 29];9(1):22-7. Available from: https://www.banglajol.info/index.php/JRPMC/article/view/72709