Kawsar, R.; Hossain, M.; Howlader, M. M. R.; Hossain, M. M. M.; Abdin, M. J.; Alam, M. S. A 16-Year-Old Boy With Chronic Discharging Sinus on Upper Left Lateral Incisor Tooth. Bangabandhu Sheikh Mujib Medical University Journal 2019, 12, 45-49.