Paracrine IL-6 signaling mediates the effects of pancreatic stellate cells on epithelial-mesenchymal transition via Stat3/Nrf2 pathway in pancreatic cancer cells by Wu, Yuan Seng, Chung, Ivy, Wong, Won Fen, Masamune, Atsushi, Sim, Maw Shin, Looi, Chung Yeng