Jamal, Brig Shahid, and Maj M Ashraf Sharif. “ESOPHAGEAL CANCER IN PAKISTAN –IS IT REALLY EXTENSION OF ASIAN CANCER BELT: Esophageal Cancer in Pakistan”. Pakistan Armed Forces Medical Journal, vol. 60, no. 2, June 2010, pp. 158-60, https://pafmj.org/PAFMJ/article/view/1809.