Efficacy and safety of Huashi Baidu granule plus Nirmatrelvir-Ritonavir combination therapy in patients with high-risk factors infected with Omicron (B.1.1.529): A multi-arm single-center, open-label, randomized controlled trial
Yu et al., Phytomedicine, doi:10.1016/j.phymed.2023.155025
https://c19early.org/yu4.html