Lee S, Lee D, Min D, Park S, Kim D, Kim E, Choi B, Kwon K. Ethanolic Extract from <i>Echinacea purpurea</i> (L.) Moench Inhibits Influenza A/B and Respiratory Syncytial Virus Infection <i>in vitro</i>: Preventive Agent for Viral Respiratory Infections. Prev. Nutr. Food Sci. 2024;29:332-344. https://doi.org/10.3746/pnf.2024.29.3.332