Muhammad Sajjad, Saadia Ashraf, Afzaal Ali Khan, and Muhammad Younas. “Outcome Analysis of Noninvasive Ventilation in Acute Exacerbation of COPD Patients With Type 2 Respiratory Failure in Pulmonology Unit”. Journal of Health, Wellness and Community Research (June 18, 2025): e360. Accessed June 18, 2025. https://jhwcr.com/index.php/jhwcr/article/view/360.