M. Al-Habib, H., R. A. Yonis, and A. F. Ahmad. “Waist Circumference: A Better Predictor Forlung Ventilation Than Body Mass Index”. Annals of the College of Medicine, Mosul, vol. 36, no. 1, Dec. 2010, pp. 12-17, doi:10.33899/mmed.2010.8931.