Yang, Chao, Jing Hu, Xiaoping He, and Xianming Fan. “Symmetrical Peripheral Gangrene Complicating Recurrent Cholangiocarcinoma: A Case Report”. Journal of the Pakistan Medical Association 75, no. 8 (July 28, 2025): 1277–1280. Accessed November 7, 2025. https://jpma.org.pk/index.php/public_html/article/view/21093.