M. W. Ayub, M. K. Hameed, T. Khurshid, and M. R. Hasnain, “UNIQUE FOREIGN BODY OESOPHAGUS”, Pak Armed Forces Med J, vol. 63, no. 4, pp. 603–05, Dec. 2013, Accessed: Jul. 26, 2024. [Online]. Available: https://pafmj.org/PAFMJ/article/view/2169