Tayyaba Anis Chaudhry, Aysha Mushtaq, Ayesha Zafar, Rubab Rameez, Tooba Jamal, and Fatima Iqbal. “Chronic Obstructive Sleep Apnea: A Predictor of Abnormal Glucose Metabolism”. Pakistan Journal of Chest Medicine, vol. 28, no. 2, June 2022, pp. 162-6, doi:10.1996/pjcm.v28i2.806.