M., Muniraju, and Tanubha Goel. “A Rare Case of Second Branchial Fistula With Two External Openings”. International Journal of Otorhinolaryngology and Head and Neck Surgery 9, no. 9 (August 24, 2023): 738–741. Accessed April 28, 2026. https://www.ijorl.com/index.php/ijorl/article/view/3967.