Synergistic antitumor activity of withaferin A combined with oxaliplatin triggers reactive oxygen species-mediated inactivation of the PI3K/AKT pathway in human pancreatic cancer cells - Li, X; Zhu, F; Jiang, J; Sun, C; Wang, X; Shen, M; Tian, R; Shi, C; Xu, M; Peng, F (Cancer Lett, 2015)