In vivo Inhibition of S180 Tumors by the Synergistic Effect of the Chinese Medicinal Herbs Coptis chinensis and Evodia rutaecarpa - Wang, Xiao-na; Xu, Li-na; Peng, Jin-yong; Liu, Ke-xin; Zhang, Li-hua; Zhang, Yu-kui (Planta Medica, 2009)