Chen, J., Yang, Q., Xu, X., Wu, X., Han, Y., Guo, C., & Yang, J. (2024). Outcome differences of starting Paxlovid for COVID-19 within or after five days of symptoms onset in the elderly: a retrospective study. The Journal of Infection in Developing Countries, 18(09), 1373–1379. https://doi.org/10.3855/jidc.19265