1. Stem Cell Research Center, University of California, Irvine, CA, USA
2. Gavin Herbert Eye Institute, University of California, Irvine, CA, USA
3. Present Address: Department of Ophthalmology, Shanghai Ninth People’s Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
4. Present Address: Huntington Beach Eye Consultants, Huntington Beach, CA, USA
5. National Swine Resource and Research Center, University of Missouri, Columbia, MO, USA