Tehzeeb Ashraf; Muhammad Rauf Ul Hassan; Muhammad Asif; Niaz Liaqat. Efficacy of High Flow Nasal Cannula Versus Noninvasive Ventilation in Acute Exacerbation of COPD. IJBR 2025, 3 (7), 95-99. https://doi.org/10.70749/ijbr.v3i7.1422.