1. From the F. M. Kirby Center for Molecular Ophthalmology, Scheie Eye Institute, University of Pennsylvania, Philadelphia, Pennsylvania;
2. Department of Neurosurgery, Pennsylvania State Hershey Medical Center, Hershey, Pennsylvania;
3. Department of Nutrition, College of Health and Human Development, Pennsylvania State University, University Park, Pennsylvania;
4. Institut Cochin, Université Paris Descartes, CNRS (UMR 8104), Paris, France; and 6Inserm, U567, Paris, France.