De, B., S. Sen, R. Choudhury, and R. Chakraborty. “COMPARATIVE THEORETICAL ANALYSIS ON RESPIRATORY TRACT INFECTION CAUSED BY DIFFERENT MICROORGANISMS WITH REFERENCE TO COVID-19”. Journal of Advanced Scientific Research, Vol. 12, no. 03 Suppl 2, Oct. 2021, pp. 57-63, doi:10.55218/JASR.s2202112308.