Jin-Min Gu, Shu-Nan Zhang, Si-Yao Xiao, Ming-Yue Jia, Jian-Feng Tu, Gui-Ling Han. "Effect of Chinese herbal medicine (CHM) as an adjunctive therapy in distinct stages of patients with COVID-19: A systematic review and meta-analysis." PLoS ONE, 2025. doi:10.1371/journal.pone.0318892