Datta A, Akhtar N, Naha A. Columellar sinus: A rare congenital isolated sinus. Bangabandhu Sheikh Mujib Medical Univ J [Internet]. 2016 Jul. 28 [cited 2023 Jun. 4];9(1):48-9. Available from: https://www.banglajol.info/index.php/BSMMUJ/article/view/28944