Ahsan, M. S.; Ahmed, S.; Khan, R.; Hasan, M. M.; Kar, A.; Shahjahan, H.; Ferdous, F.; Hossain, M.; Hossain, M. K. Psychological Impact of COVID -19 Pandemic on Frontline Health Care Workers in Bangladesh: A Cross-Sectional Study. Bangabandhu Sheikh Mujib Medical University Journal 2021, 14, 22-29.