Savranlar, Ahmet, Alpay Alkan, O.Gazi Yigitbasi, and Faruk Atabey. 2021. “Case Report: Metalic Foreign Body in Eustachian Tube”. Annals of Medical Research 9 (3):0223-24. http://www.annalsmedres.org/index.php/aomr/article/view/2912.