Mohamed Elshewy, S. M.; Hussain , R.; Osman, Y. H. A.; Ch , A. I.; Wajid, H.; Ahmed, M.; Khan , A. J.; Akram, A. Effectiveness of Non-Invasive Ventilation Vs. Invasive Ventilation in Acute COPD Exacerbation: A Meta-Analysis of Randomized and Observational Studies. IJBR 2025, 3 (3), 135-141. https://doi.org/10.70749/ijbr.v3i3.959.