M. Zulqarnain, S. Singh, A. Prasad, , Abdullah, and T. Palit, “Use of Antibiotics in Upper Respiratory Tract Infections in Tertiary Care Teaching Hospital of Delhi”, J. Drug Delivery Ther., vol. 11, no. 2-S, pp. 36–40, Apr. 2021, doi: 10.22270/jddt.v11i2-S.4793.