Gupta, R., Sharma, S., ., P., & Saxena, S. (1969). Changing panorama for surveillance of device-associated healthcare infections: Challenges faced in implementation of current guidelines. Indian Journal of Medical Microbiology, 36(1), 18-25. https://doi.org/10.4103/ijmm.IJMM_18_50 (Original work published 1969)