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 [Internet]. 2025 Jul. 13 [cited 2026 May 31];3(7):95-9. Available from: https://ijbr.com.pk/IJBR/article/view/1422