1. Department of Physiology and Biophysics, Boston University School of Medicine, Boston, MA 02118
2. Institute for Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, 194223 St. Petersburg, Russia
3. Department of Ophthalmology, Medical University of South Carolina, Charleston, SC 29425
4. Department of Ophthalmology, Agia Sophia Children's Hospital, University of Athens, Athens 11527, Greece
5. National Eye Institute, National Institutes of Health, Bethesda, MD 20892