Lu, Yi, Yazhu Han, Shichao Cheng, and Xin Zhang. “Comparison of Effectiveness Between Two Treatment Methods for Patients With Anal Fistula and Their Impact on Serum IL-6 and SAA”. Journal of the Pakistan Medical Association 75, no. 8 (January 28, 2025): 1224–1228. Accessed November 18, 2025. https://jpma.org.pk/index.php/public_html/article/view/20663.