Kahnom, M. et al. 2023. Predictors of Duration and Demand of Oxygen Therapy in Hospitalized RT-PCR Positive COVID-19 Patients: Demand of Oxygen Therapy in Hospitalized RT-PCR Positive COVID-19 Patients. Bangladesh Medical Research Council Bulletin. 49, 1 (Apr. 2023), 75–80. DOI:https://doi.org/10.3329/bmrcb.v49i1.66754.