Kabir, M. A., M. H. M. Kamal, and A. S. Hossain. “Sonographic Evaluation of Effect of Smoking and Fatty Meals on Gallbladder”. Journal of Enam Medical College, vol. 8, no. 1, Feb. 2018, pp. 29-34, doi:10.3329/jemc.v8i1.35433.