Morikawa, M. J., and P. R. Ganesh. “The Evidence and Feasibility of Using Pulse Oximetry for the Management of Childhood Pneumonia in Low- and Middle-Income Countries: a Clinical Review”. International Journal Of Community Medicine And Public Health, vol. 8, no. 2, Jan. 2021, pp. 993-7, doi:10.18203/2394-6040.ijcmph20210255.