D., J., N. S., P. K. R., I. G., and V. S. “Bacterial Colonization of Stethoscope Used in the Tertiary Care Teaching Hospital: A Potential Source of Nosocomial Infection”. International Journal of Research in Medical Sciences, vol. 5, no. 1, Dec. 2016, pp. 142-5, doi:10.18203/2320-6012.ijrms20164537.