John, P. H., Thanakumar, J. A. C., Rao, A. M., Kapali, N. T., & Seshadri, M. S. (2020). COVID-19: Ultraviolet-C device for protecting operation theatre personnel: a pilot controlled study. International Journal Of Community Medicine And Public Health, 7(12), 4927–4933. https://doi.org/10.18203/2394-6040.ijcmph20205164