1. Department of Physiology, National Cheng Kung University, Tainan, Taiwan, Republic of China;
2. Department of Engineering Sciences and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan, Taiwan, Republic of China;
3. Department of Cell Biology and Anatomy, National Cheng Kung University, Tainan, Taiwan, Republic of China; and
4. Institute of Behavioral Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China