Haider HMA, Riaz MH, Shakeel Z, Shakeel I, Rehman MA ur, Pal MHA. Comparative Study of Dual Therapy vs Triple Therapy in Severe COPD Management. IJBR [Internet]. 2025 Feb. 28 [cited 2026 Apr. 9];3(2):552-7. Available from: https://induspublishers.com/index.php/IJBR/article/view/723