Pratap Upadhya et al. 2023. Management of Acute Exacerbation of Chronic Obstructive Pulmonary Disease during the COVID-19 Pandemic. Perspective of Recent Advances in Medical Research Vol. 7. (Jan. 2023), 69–76. DOI:https://doi.org/10.9734/bpi/pramr/v7/4190B.