Pol SA, Singhal SK, Gupta N, Sivanandan SP. Recurrent collaural fistula: a challenge. Int J Otorhinolaryngol Head Neck Surg [Internet]. 2019 Aug. 27 [cited 2025 Nov. 1];5(5):1404-6. Available from: https://www.ijorl.com/index.php/ijorl/article/view/1650