Datta, Anindita, Nasima Akhtar, and Abirvab Naha. 2016. “Columellar Sinus: A Rare Congenital Isolated Sinus”. Bangabandhu Sheikh Mujib Medical University Journal 9 (1):48-49. https://doi.org/10.3329/bsmmuj.v9i1.28944.