1. University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
2. University of Arkansas for Medical Science, Little Rock, Arkansas
3. Northeast Ohio Medical University, Rootstown, Ohio
4. Bascom Palmer Eye Institute at the University of Miami Miller School of Medicine, Miami, Florida
5. Medical College of Georgia, Augusta, Georgia
6. University of Texas Rio Grande Valley School of Medicine, El Paso, Texas
7. Wills Eye Hospital, Mid Atlantic Retina, Philadelphia, Pennsylvania