Tetrandrine Induces Apoptosis of Human Nasopharyngeal Carcinoma NPC-TW 076 Cells through Reactive Oxygen Species Accompanied by an Endoplasmic Reticulum Stress Signaling Pathway oleh Ya-Jing Lin, Shu-Fen Peng, Meng-Liang Lin, Chao-Lin Kuo, Kung-Wen Lu, Ching-Lung Liao, Yi-Shih Ma, Fu-Shin Chueh, Kuo-Ching Liu, Fu-Shun Yu, Jing-Gung Chung