1. a Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China; Biomedical Engineering Research Center, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China; Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China
2. b Limbal Stem Cell Laboratory, Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan, Taiwan 33305, Republic of China; Department of Chinese Medicine, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China
3. c Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China
4. d Department of Ophthalmology, Chang Gung Memorial Hospital, Keelung, Taiwan 20401, Republic of China
5. e Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China
6. f Institute of Biochemical and Biomedical Engineering, Chang Gung University, Taoyuan, Taiwan 33302, Republic of China
7. g Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan 30013, Republic of China