Rishad, M.M. et al. 2022. Comparison of Disease Severity and In-hospital Outcome of COVID-19 among Non-vaccinated versus Vaccinated (1st dose) Hospitalized Patients in a Tertiary Care Hospital: an Observational Study. Bangladesh Journal of Medicine. 33, 3 (Aug. 2022), 293–299. DOI:https://doi.org/10.3329/bjm.v33i3.61376.