Rosy, S.K. et al. 2024. Vitamin D and it’s Association with FokI VDR Polymorphism in Patients with Asthma-COPD Overlap. Journal of Rangpur Medical College. 9, 1 (May 2024), 22–27. DOI:https://doi.org/10.3329/jrpmc.v9i1.72709.