1. Department of Ophthalmology, Penn State College of Medicine, Hershey, Pennsylvania
2. Department of Public Health Sciences, Penn State College of Medicine, Hershey, Pennsylvania
3. The Emmes Company, LLC, Rockville, Maryland
4. Doheny Eye Institute, UCLA (University of California, Los Angeles)
5. Fundus Photograph Reading Center, University of Wisconsin–Madison
6. Southern California Desert Retina, Palm Desert