1.
Singh N, Meher R, Wadhwa V, Ali MR. Facial pain: a rare presenting symptom of sympathetic chain schwannoma. Int J Otorhinolaryngol Head Neck Surg [Internet]. 2021 Aug. 23 [cited 2026 Jan. 17];7(9):1559-61. Available from: https://www.ijorl.com/index.php/ijorl/article/view/3118