1 Graduate Institute of Physiology, National Taiwan University College of Medicine, Suite 1020, #1 Jen-Ai Rd. Sec. I, Taipei, 100, Taiwan, ROC.
2 Graduate Institute of Physiology, National Taiwan University College of Medicine, Suite 1020, #1 Jen-Ai Rd. Sec. I, Taipei, 100, Taiwan, ROC. lchyu@ntu.edu.tw.