Jangda, Iqra, and Gauhar Afshan. “Preoxygenation in Surgical Patients Undergoing General Anaesthesia – A Cross Sectional Survey”. Journal of the Pakistan Medical Association 75, no. 10 (September 25, 2025): 1522–1526. Accessed July 7, 2026. https://www.jpma.org.pk/index.php/public_html/article/view/10467.