Cardenolide glycosides sensitize gefitinib-induced apoptosis in non-small cell lung cancer: inhibition of Na+/K+-ATPase serving as a switch-on mechanism - Chi-Min Du; Wohn-Jenn Leu; Yi-Huei Jiang; She-Hung Chan; Ih-Sheng Chen; Hsun-Shuo Chang; Lih-Ching Hsu; Jui-Ling Hsu; Jih-Hwa Guh (Naunyn-Schmiedeberg's Archives of Pharmacology, 2024)