Dhingra, R., J. L. Davessar, S. Sharma, and K. Kaur. “Unusual Case of Mobile Phone Simulation SIM card’s Outer Case Ingestion: Wedged at Laryngeal Surface of Epiglottis”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 5, no. 2, Feb. 2019, pp. 514-6, doi:10.18203/issn.2454-5929.ijohns20190789.