Y. C., S., Sethi, M., Barsinge, T., Kamath, Y. and A. S., K. 2025. A follow up study of warning letters issued by US Food and Drug Administration to clinical investigators, institutional review boards and sponsors: a situational analysis during COVID-19 pandemic. International Journal of Research in Medical Sciences. 13, 4 (Mar. 2025), 1587–1593. DOI:https://doi.org/10.18203/2320-6012.ijrms20250986.