Sadaf S, Durrani HD, Bashir B. Effectiveness of Non-Invasive vs. Invasive Ventilation in Acute Hypoxic Respiratory Failure in COVID-19 Patients in Critical Care: A Retrospective Cohort in Rahim Yar Khan, Pakistan. PJMR [Internet]. 2021 Jul. 9 [cited 2026 Jul. 24];60(2):90-5. Available from: https://www.pjmr.org.pk/index.php/pjmr/article/view/105