Ahmed, O., Z. Habib, S. U. Rahman, A. Beg, M. Shoaib, A. Hirani, and A. Hamidani. “Obstructive Sleep Apnea in General Surgery Patients: Is Screening Required Preoperatively?”. National Journal of Health Sciences, vol. 5, no. 3, Mar. 2021, pp. 94-98, https://ojs.njhsciences.com/index.php/njhs/article/view/168.