Kamal, Sheikh Shawkat. “Transcanal Endoscopic Antrostomy Hole : Its Utility in Restoring Ventilation Pathway to Epitympanum and Mastoid Antrum During Tympanoplasty”. Bangladesh Journal of Endosurgery 2, no. 1 (July 19, 2014): 9–14. Accessed August 19, 2022. https://banglajol.info/index.php/BJE/article/view/19588.