Woo, S., Lyu, Y. R., Kang, B., Seo, B., Kim, A., Lee, B., Park, Y. C. (2026). Efficacy and safety of Galgeun-tang-ga-cheongung-sinyi for nasal congestion with common cold: A study protocol for randomized, double-blind, placebo-controlled, parallel, multicenter clinical trial. PLoS ONE. https://doi.org/10.1371/journal.pone.0342433