Sirshak Dutta, Ruma Guha, Soumya Ghatak, Shriyash Sinha, and Ramanuj Sinha. “Clinico-Demographic Study of Otitis Media With Effusion in Different Age Groups”. International Journal of Health and Clinical Research, vol. 3, no. 10, Aug. 2021, pp. 6-12, https://ijhcr.com/index.php/ijhcr/article/view/2510.