Metformin synergistically enhances the antitumor activity of the third‐generation EGFR‐TKI CO‐1686 in lung cancer cells through suppressing NF‐κB signaling. - Pan, Yong‐Hong; Lin, Cai‐Yu; Lu, Cong‐Hua; Li, Li; Wang, Yu‐Bo; Chen, Heng‐Yi; He, Yong (Clinical Respiratory Journal, 2018)