Fatima, I., R. Yasmin, M. Kamal, and M. Harani. “OCCURRENCE OF ESOPHAGEAL CARCINOMA IN DIFFERENT AGE GROUP IN KARACHI”. Pakistan Journal of Pathology, vol. 24, no. 2, Aug. 2016, http://pakjpath.com/index.php/Pak-J-Pathol/article/view/69.