Zaidi, U., L. F. Hammad, S. S. Awad, S. M. A. Elkholi, and H. D. Qasem. “Relationship of Ergonomics, Lifestyle and Job Satisfaction Among Sonographers in Riyadh, KSA”. Journal of Liaquat University of Medical & Health Sciences, vol. 17, no. 03, Apr. 2019, pp. 127-34, http://121.52.154.205/index.php/jlumhs/article/view/53.