Chowdhury, Mohammad Mahabubul Alam, Kamrul Hassan Tarafder, Pran Gopal Datta, Mostafa Zaman, Nasima Akhtar, and Kawsar Sultana. 2021. “Study on Hearing Impairment in Bangladesh”. Chattagram Maa-O-Shishu Hospital Medical College Journal 20 (1):72-76. https://doi.org/10.3329/cmoshmcj.v20i1.53592.