Zhang, Yafei, Bicheng Zhang, Anran Zhang, Yong Zhao, Jie Zhao, Jian Liu, Jianfei Gao, Dianchun Fang, and Zhiguo Rao. 2012. “Synergistic Growth Inhibition by Sorafenib and Vitamin K2 in Human Hepatocellular Carcinoma Cells”. Clinics 67 (9): 1093-99. https://doi.org/10.6061/clinics/2012(09)18.