1. Department of Ophthalmology Casey Eye Institute, Oregon Health & Science University (OHSU), Portland, Oregon
2. Department of Ophthalmology Wills Eye Hospital, Mid Atlantic Retina, Thomas Jefferson University, Philadelphia, Pennsylvania
3. Department of Ophthalmology Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
4. Department of Ophthalmology, Bascom Palmer Eye Institute, Retina and Vitreous Disease, Miami, Florida