Yang Y, Yang S, Chen M, Zhang X, Zou Y, Zhang X. Compound Astragalus and Salvia miltiorrhiza Extract exerts anti-fibrosis by mediating TGF-beta/Smad signaling in myofibroblasts. J Ethnopharmacol. 2008 Jul 23;118(2):264–70. doi: 10.1016/j.jep.2008.04.012. PMID: 18502066.