Jin Li, Shao-Na Chen, Yun-Yong Lin, Zhi-Min Zhu, Da-Lin Ye, Fei Chen, and Shao-Dong Qiu. 2021. “Diagnostic Accuracy of Three-Dimensional Endoanal Ultrasound for Anal Fistula: A Systematic Review and Meta-Analysis”. Turkish Journal of Gastroenterology 32 (11):913-22. https://tjg.avesjournals.com/index.php/tjg/article/view/4131.