1. Department of Biomedical Engineering, Chang Gung University, Taoyuan 33302, Taiwan
2. Department of Ophthalmology, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan
3. Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan
4. Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan