1. Department of Ophthalmology, Chi-Mei Medical Center, Yong Kang, Tainan City, Taiwan
2. Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan City, Taiwan
3. Department of Biological Science and Technology, Chung Hwa University of Medical Technology, Tainan, Taiwan
4. Department of Medical Research, Chi-Mei Medical Center, Yung Kang, Tainan City, Taiwan