Ashraf, Tehzeeb, Muhammad Rauf Ul Hassan, Muhammad Asif, and Niaz Liaqat. “Efficacy of High Flow Nasal Cannula Versus Noninvasive Ventilation in Acute Exacerbation of COPD”. Indus Journal of Bioscience Research 3, no. 7 (July 13, 2025): 95–99. Accessed April 9, 2026. https://induspublishers.com/index.php/IJBR/article/view/1422.